英语听力：自然百科 大迁徙 Great Migrations—15
时间：2014-05-21 08:04:18
搜索关注在线英语听力室公众号：tingroom，领取免费英语资料大礼包。
（单词翻译）
Soon there may be violence as males joust1 to win female affections. But for now, everyone enjoys a touching2 reunion. The calf3, out of his depth among these goliaths, returns to the mentoring4 eye of his mother. He may not leave her for another 10 years to join other young males in wandering bachelor groups. And he may be forty before he masters the global oceans on his own.
It's September in North America. And over one billion
monarchs5 have been winging their way south,
racing6 to get to Mexico before the first frost. By soaring on wind currents, they save enormous amounts of energy and about half will survive the 2,000-mile journey. Their flashy coloration signals their
toxic7 nature. But some
predators8 can withstand the
toxins9 like the praying
mantis10.
After more than two months, and up to 900 hours of flying,
survivors11 begin to flutter into their wintering grounds in late October. Hundreds of millions of them now alight on this threatened patch of Mexican forest. They cluster in the same
grove12, sometimes even the same tree, as the great grandparents who started this strange
odyssey13.
分享到：
Error Warning!
出错了
Error page: /mobile/index.php?aid=259353&mid=3
Error infos: Got error 28 from storage engine
Error sql: select `l`.`tag`,`l`.`index`,`l`.`level_id`,`b`.`id`,`b`.`word`,`b`.`spell`,`b`.`explain`,`b`.`sentence`,`b`.`src` from `new_wordtaglist` `l` left join `new_word_base` `b` on `l`.`tag`=`b`.`word` where `l`.`arc_id`='259353' and `l`.`level_id`>='' group by `b`.`word` order by `l`.`index` asc
