1.human beings 人類
例句:All human beings are much more intelligent than animals.
所有的人都比動物聰明得多。
2.fell out 爭吵;鬧翻
例句:The two of them never fell out.
他們倆從來沒翻過臉。
3.a group of 一組;一群
例句:Suddenly the door opened and a group of children burst in.
門突然打開,闖進了一群孩子。
4.there is no reason 毫無道理;沒有理由
例句:There is no reason why they cannot see off the Republican challenge.
他們沒有理由在共和黨的挑戰中敗北。