potable

The hikers were relieved to find a potable water source after hours of hiking.

用法提示：‘potable’ 作为形容词修饰 ‘water source’，表示‘可饮用的’。

It is essential to ensure that the water supply in the camp is potable.

用法提示：‘potable’ 用作表语形容词，说明主语 ‘water supply’ 的特性。

The laboratory tested the sample to confirm it was potable.

用法提示：‘potable’ 作为形容词用在系动词后，描述 ‘sample’ 的状态。