Alkalion
羟离子, 氢氧离子
🗣️ 情景例句
It's cold outside.
外面很冷。
Would 1:00 be convenient?
1点钟行吗？
The examiner must have been pleased with my performance, for he smiled and said.'Just one more thing, Mr.Eames.
“埃姆斯先生，只剩1项了。