警察使用了催泪瓦斯罐来驱散抗议者。

The police used ___canisters of tear gas to disperse the protesters.

我把糖和面粉都放在厨房的金属罐里。

I keep both sugar and flour in the metal ___canisters in the kitchen.

这些金属罐里装满了用于实验室测试的化学试剂。

These metal ___canisters are filled with chemicals for lab testing.