Unless instructed otherwise, all employees should submit expense reports by Friday afternoon.

除非另有指示，所有員工應於週五下午前提交費用報告。

The manager expected a quick approval, but the client decided otherwise after reviewing the contract.

經理原本預期能很快獲得核准，但客戶審閱合約後做了不同的決定。

Passengers may keep their seats unless the flight attendant directs them otherwise during boarding.

除非空服員另有指示，乘客在登機期間可以保留原座位。