很多雄鸟进化出鲜艳的羽毛是为了吸引雌鸟。The bright plumage of many male birds has evolved to attract females.人类的进化the evolution of the human species陆栖动物据信由海栖动物进化而来.Land animals are believed to have developed from sea animals....
There was a sandpit, a seesaw and a swing in the playground.游乐场上有一处沙坑、一块跷跷板和一个秋千架。This path leads slap to the playground.这条小路直接通到运动场。The teacher told his pupils to spread out and not to bunch up in the center of the play...
Low levels of choline in the body can give rise to high blood-pressure.体内胆碱水平过低会引起高血压。Clinical symptoms found in young pigs suffering from choline deficiency are unthriftiness.已发现的缺乏胆碱的幼猪的临床症状是身体憔悴.By this mechanism, new...
Some of it has to do with recent stage musicals, which have been very, very stylised.其中一些与最近几部有着浓厚艺术气息的舞台音乐剧有关。I get very nostalgic when I watch these old musicals on TV.我从电视中看到这些旧音乐影片,怀旧之情油然而生.She revelled in big MGM mu...