in doubt

汉语翻译

例句：

1. Always proofread completed letters very carefully. Consult dictionary when necessary or in doubt.
   完成的书信一定要很小心地校对，有必要或怀疑时查典。
2. The outcome of the election was in doubt then.
   当时大选的结果还看不准。
3. I am in doubt what to do.
   我不知道要做什么好。
4. Their acceptance of the contract is still in doubt.
   他们是否接受那合同还说不准。