Stepdown
降压的降低
🗣️ 情景例句
It's common practice.
这是惯例。
I'm brushing my teeth in the bathroom.
我在浴室刷牙。
We felt sure that sooner or later a stone would rip a hole in our petrol tank or damage the engine.
我们想念迟早会飞起一个石块把油箱砸开一个窟窿，或者把发动机砸坏。