英语 英语 日语 日语 韩语 韩语 法语 法语 德语 德语 西班牙语 西班牙语 意大利语 意大利语 阿拉伯语 阿拉伯语 葡萄牙语 葡萄牙语 越南语 越南语 俄语 俄语 芬兰语 芬兰语 泰语 泰语 泰语 丹麦语 泰语 对外汉语

【英语时差8,16】睡莲叶,伞叶树和葡萄树(上)

时间:2015-11-30 08:13来源:互联网 提供网友:yajing   字体: [ ]
特别声明:本栏目内容均从网络收集或者网友提供,供仅参考试用,我们无法保证内容完整和正确。如果资料损害了您的权益,请与站长联系,我们将及时删除并致以歉意。
    (单词翻译:双击或拖选)

Look closely at a lily pad sometime and you’ll see that its shape is different from virtually any other leaf. With most leaves, the stem attaches to one edge of the leaf. You can see how lily pads are different from other leaves if you imagine an insect crawling up the leaf. On most leaves, the insect could climb directly from the stem onto the upper surface of the leaf. Not so with a lily pad. The stem of the lily pad – which connects the flower to the bottom of the pond — meets the leaf in the middle of its underside. An insect crawling up the stem of a lily pad would have to climb over the underside of the leaf before climbing out onto the top. In a pond, this leaf shape helps the leaf to float flat on the surface with the stem hanging straight down to the bottom.

本文本内容来源于互联网抓取和网友提交,仅供参考,部分栏目没有内容,如果您有更合适的内容,欢迎点击提交分享给大家。
------分隔线----------------------------
顶一下
(0)
0%
踩一下
(0)
0%
最新评论 查看所有评论
发表评论 查看所有评论
请自觉遵守互联网相关的政策法规,严禁发布色情、暴力、反动的言论。
评价:
表情:
验证码:
听力搜索
推荐频道
论坛新贴