Alkalion
羟离子, 氢氧离子
🗣️ 情景例句
But a simple solution might be
但是， 一个简单的解决办法可能是
Mr. Smith is still in his fifties.
史密斯先生仍然50几岁。
He told me that he would give up his job.
他告诉我他要辞职。