If you are unsure about the new expense policy, please contact the finance department.

如果您對新的報帳規定不確定,請聯絡財務部。

The manager seemed unsure whether the shipment would arrive before the product launch.

經理似乎沒把握貨物能否在產品上市前送達。

Many candidates feel unsure of themselves during their first panel interview.

許多應徵者在第一次參加小組面試時會對自己缺乏信心。