He uses some dubious shifts to get money.
他用一些
疑
手段去赚钱。
, 
疑
靠, 冒风险疑;，逃避;;;疑;;;笑,滑稽笑
;;;;He uses some dubious shifts to get money.
他用一些疑手段去赚钱。
The tests have been shown to be of dubious validity.
这些试验有效性已显得令人怀疑。
What he said yesterday was dubious.
他昨天说话很含糊。
He has the dubious distinction of being the first railway baron to go bankrupt.
他担着首位破产铁路大亨名声，这也算是种荣誉吧。
He is a dubious character.
他是一个靠
住人。
Alex looked dubious, but complied.
亚
看上去有些疑惑，但仍服从了。
The result is still dubious.
结果尚未定。
If his dubious transactions come to the notice of the authorities, he'll get it in the neck.
如果他诚实交易给当局察觉了, 他就要受到严厉惩罚。
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