Hsab
[化] 软硬酸碱
🗣️ 情景例句
I'm thinking of ordering 100 sets. But one problem-
我正考虑定购一百台，只是一个问题-
Let's go to the station to get a train into town.
我们到火车站去乘车进城。
This is a picture of my family at home.
这是我们全家在家里照的一张照片。