提示：点击例句中的单词，就可以看到词义解释

He praises the efforts of teach for america to recruit smart recent college graduates into urban teaching ranks .

为美国而教（TeachforAmerica）招聘天资聪慧的应届大学毕业生充实城市教师队伍，科恩对这一做法大加赞赏。

And their ranks could grow .

这支队伍的人数可能会增长。

More are likely to join their ranks .

还有更多的人可能会加入到这个行列。

February saw a further 112000 spaniards added to the ranks of the jobless .

二月份更是有112000位西班牙人加入到失业者的行列中。

He predicts that singapore , currently 32 points behind hong kong , could join the top ranks soon .

他预计，目前比香港少32分的新加坡可能很快就会加入三甲行列。