Octadecyl
[化] 十八基; 十八烷基
🗣️ 情景例句
if that's what you mean.
是这个意思吧。
What is he doing today?
今天他在做些什么？
The officer in the control tower was very angry when he heard the news,
控制塔上的官员得知这一消息后，非常气愤，