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VOA科学技术2022 加州雨雪天气使鲑鱼数量增加

时间:2022-02-20 23:23来源:互联网 提供网友:nan   字体: [ ]
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Rain, Snow Support Healthier Salmon1 in California

California, which has suffered from a lack of rainfall, welcomed the arrival of rain and snow late last year.

一直饱受降雨不足之苦的加利福尼亚州去年年底迎来了雨雪天气。

The precipitation gave farmers and city planners in the western state hope for better days ahead.

降水给该州西部的农民和城市规划者带来了未来日子更美好的希望。

Wildlife officials say the water also has led to healthier growth in the state's population of endangered fish called coho salmon.

野生动物官员表示,这些水还使得该州濒危鱼类银鲑的数量更健康地增长。

Records from the National Weather Service show that California received more precipitation from October to December than during the previous 12 months.

美国国家气象局的记录显示,加州从10月到12月的降水量比之前的12个月多。

California weather officials reported in late December that the snow level in the state's Sierra Nevada Mountains was 200 percent of its average for that date.

加州气象官员在12月下旬报告说,该州内华达山脉的降雪量是同期平均水平的200%。

The increase is important because the Sierra Nevada Mountains supply nearly one third of the state's water needs.

这一增长很重要,因为内华达山脉提供了该州近三分之一的用水需求。

Officials said the snow level statewide was 160 percent of its average.

官员们表示,全州的降雪量是其平均水平的160%。

The arrival of rain and snow came in time for the November-to-January spawning3 season in the Tomales Bay area, north of San Francisco.

雨雪的到来正好赶上了旧金山北部托马莱斯湾地区11月至1月的产卵季节。

The precipitation enabled4 some fish to reach waters near Lagunitas Creek5, about 20 kilometers inland.

降水使一些鱼能够到达内陆约20公里处的拉古尼塔斯河附近的水域。

"We've seen fish in places that they haven't been for almost 25 years," said Preston Brown.

普雷斯顿·布朗说:“我们在几乎25年来没出现过鱼的地方看到了鱼。”

He directs a water conservation program for the Salmon Protection and Watershed6 Network, or SPAWN2.

他为鲑鱼保护和流域网(SPAWN)管理着一个水资源保护项目。

Experts say some fish have been seen in places where they could not go before.

专家表示,一些鱼曾出现在它们以前不能去的地方。

That includes about one-and-a-half kilometers past a place where a dam once existed on San Geronimo Creek.

其中包括经过圣杰罗尼莫河上曾经建大坝的地方大约1.5公里的水域。

The dam was removed about a year ago.

大坝大约在一年前被拆除。

Weather officials said last year's precipitation could end up being just a short break in the state's severe, 20-year drought7.

气象官员说,去年的降水可能只是该州20年严重干旱的一个短暂间歇。

The water shortage8 has made it difficult for officials to keep fish, farms and growing cities supplied with enough water.

水资源短缺使官员们难以为鱼类、农场和不断发展的城市提供足够的水。

Experts say the state needs several wet years in a row to refill supplies.

专家表示,该州需要连续数年多雨来补充供应。

But for now, the salmon are doing well.

但就目前而言,鲑鱼的状况良好。

They are leaving eggs in nests where babies will be born and spend most of their youth.

它们把卵留在窝里,鱼宝宝将在那里出生,并在那里度过大部分的幼年时光。

The fish will then swim out to the ocean as adults, later returning to the same area to spawn.

之后,这些鱼成年后将会游到海里,然后回到同一区域产卵。

Todd Steiner is the director of Turtle Island Restoration Network, the parent group to SPAWN.

托德·施泰纳是海龟岛修复网的负责人,其是SPAWN的母组织。

He told Reuters news agency9 the fish like to stay in smaller bodies of water, because "that's where their survival10 is the highest."

他告诉路透社,这种鱼喜欢待在面积较小的水域中,因为“那里是它们存活率最高的地方。”

Steiner added: "If we give the fish a fighting chance at survival, they will come back."

施泰纳还说:“如果我们给这种鱼一个生存的战斗的机会,它们会回来的。”


点击收听单词发音收听单词发音  

1 salmon pClzB     
n.鲑,大马哈鱼,橙红色的
参考例句:
  • We saw a salmon jumping in the waterfall there.我们看见一条大马哈鱼在那边瀑布中跳跃。
  • Do you have any fresh salmon in at the moment?现在有新鲜大马哈鱼卖吗?
2 spawn qFUzL     
n.卵,产物,后代,结果;vt.产卵,种菌丝于,产生,造成;vi.产卵,大量生产
参考例句:
  • The fish were madly pushing their way upstream to spawn.鱼群为产卵而疯狂地向上游挤进。
  • These fish will lay spawn in about one month from now.这些鱼大约一个月内会产卵。
3 spawning e223115a66b2213a16c438abb9a400cb     
产卵
参考例句:
  • Encounter sites have a small chance of spawning a "Commander" NPC. 遭遇战地区有很小的几率遇到NPC指挥官。
  • Instantly revives your Champion at your Spawning Pool, 9 minute cooldown. 立即在出生地复活你的英雄,冷却时间9分钟。
4 enabled a10311459433adf322f2590a4987c423     
adj.激活的v.使能够,提供做…的权利[措施]( enable的过去式和过去分词 );使可能
参考例句:
  • His photographic memory enabled him to tuck away yards of facts. 他过目不忘的记忆力使他能记下大量事实。 来自《简明英汉词典》
  • Long practice enabled that American to speak fluent Chinese. 长期的练习使得那个美国人能讲一口流利的汉语。 来自《简明英汉词典》
5 creek 3orzL     
n.小溪,小河,小湾
参考例句:
  • He sprang through the creek.他跳过小河。
  • People sunbathe in the nude on the rocks above the creek.人们在露出小溪的岩石上裸体晒日光浴。
6 watershed jgQwo     
n.转折点,分水岭,分界线
参考例句:
  • Our marriage was at a watershed.我们的婚姻到了一个转折关头。
  • It forms the watershed between the two rivers.它成了两条河流的分水岭。
7 drought nrxxj     
n.旱灾,干旱,久旱
参考例句:
  • The plants are growing in again,despite the drought.尽管干旱,植物又长出来了。
  • The ground is as hard as stone after the drought.长期干旱后土地硬得就像石头一样。
8 shortage 1yrwh     
n.缺少,缺乏,不足
参考例句:
  • The city is suffering a desperate shortage of water.这个城市严重缺水。
  • The heart of the problem is a shortage of funds.问题的关键是缺乏经费。
9 agency iKcy0     
n.经办;代理;代理处
参考例句:
  • This disease is spread through the agency of insects.这种疾病是通过昆虫媒介传播的。
  • He spoke in the person of Xinhua News Agency.他代表新华社讲话。
10 survival lrJw9     
n.留住生命,生存,残存,幸存者
参考例句:
  • The doctor told my wife I had a fifty-fifty chance of survival.医生告诉我的妻子,说我活下去的可能性只有50%。
  • The old man was a survival of a past age.这位老人是上一代的遗老。
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