under ban的用法和样例：
例句
- A ban was imposed on the use of chemical weapons.
化学武器已被禁止使用。 - Free bags, even under other guises, would be banned.
免费塑料袋或使用其他的伪装将被禁止。 - On the other hand, life under Communism was fraught with so many dangers and difficulties that banishment to a provincial town was hardly a tragedy.
另一方面，生活在社会主义的体制下充满了许多危险和困难，被放逐到偏远的小镇不能不说是一场悲剧。
词汇搭配
- put…under ban 对…加以禁止...
- place…under ban 对…加以禁止...
