必须对这些鸟称重，辨识雌雄并挂上标牌。The birds must be weighed, sexed and tagged.你怎样辨别一条鱼的雌雄？How can you tell what sex a fish is?鸟的雌雄通常可就其颜色予以区分.Coloring differentiates the sexes in many birds....
Daphne Farlow, at forty-five, still looked and spoke like an overgrown schoolgirl.45岁的达芙妮·法洛外貌言谈都还像个稚气未脱的小女生。As a schoolgirl, she had dreamed of becoming an actress.她上学时曾梦想成为一名女演员。The plucky schoolgirl amazed doctors by ...
“我无法赴约了，”她说，“那天是母亲节。”"I can't make it," she said. "That's Mother's Day."母亲节规定为纪念母亲的节日.Mother's Day is a day set aside to honor motherhood.每逢母亲节,他们的孩子们都要采集那种紫色的花朵.Every Mother's Day their kids gat...
The question of going to the Mount Tai preoccupied his mind.去游泰山的问题盘踞在他心头.Viewed from the top of Mount Tai , the sunrise was indeed a spectacle.从泰山顶上看去, 日出真是个奇观.Though death befalls all men alike , it may be weightier th...