Mercaptoethanol
[建] 氢硫基乙醇
🗣️ 情景例句
Hello. This is Richard Stewart.
你好， 我是Richard Stewart。
I have to go now.
我必须走了
'I've been coming up here night after night for weeks now.
“好几个星期了，我天天夜里到钟楼上来。