Pehameter
[化] pH计
🗣️ 情景例句
I know how you feel, but there's no need to go on and on about it.
我知道你的感受，可是也没必要这样没完没了。
Do not sell the bear's skin before you have caught the bear.
熊未到手休卖皮（勿过早乐观）。
First, I'd like to tell you a few things about this factory.
首先，我想告诉你们有关这家工厂的一些情况。