understudies信息详情
vt.充当替角，熟悉（工种）以便当替工（understudy的第三人称单数）
n.替角，替补（understudy的复数）
vi.当替工，学当替工（understudy的第三人称单数）
blunders on the danube───多瑙河上的失误
clearly understand───清楚地了解；清楚地明白；明了
founders hat aj wiki───创始人hat aj wiki
tacit understanding───默契
it is understood that───不用说，当然
understood as a whole───整体理解
thunderstone xy───雷通xy
thunderstone bgg───雷通bgg
undersized───adj.小于正常（或一般）的，比一般尺寸小的；矮小的，太小的
launders───n.(Launders)人名；(英)朗德斯
If anything, the Americans now find their former understudies too aggressive.───如果有所区别的话，美军发现现在他们之前的接替者更富于攻击性。
In a company without understudies, this presented a problem, but the Ailey dancers were used to last-minute adjustments.
But despite a quiet Sunday, van der Sar's performances this season make it hard for understudies Tomasz Kuszczak and Tom Heaton to get a look-in .
Couldn't go on with the performance even with the understudies because of the police coming in.