Halomethylation
卤甲基化作用
🗣️ 情景例句
What's the matter?
发生了什么事？
Competition for this kind of goods is tough.
这种商品的竞争非常激烈。
The hovercraft is particularly useful in large areas with poor communications such as Africa or Australia;
气垫船在非洲、澳大利亚等交通不发达地区特别有用。