Regioselective
[机] 特定选择的
🗣️ 情景例句
We haven't had any complaint of this kind. Is there any evidence.
我们还从未听过这样的抱怨。有什么证据呢？
The mouse that hath but one hole is quickly taken.
狡兔三窟。
For one thing they keep the water clean.
一来，水下植物可以保持水的清洁。