waterproof

I needed a waterproof coat to stay dry while walking in the heavy rain.

(Chinese) 我需要一件防水大衣，以便在大雨中行走时保持干爽。

Divers use waterproof cameras to take high-quality photos under the ocean.

(Chinese) 潜水员使用防水相机在海底拍摄高质量照片。