Regioselective
[机] 特定选择的
🗣️ 情景例句
I'm late for dinner at my house.
我回家吃晚饭要迟到了。
Every dog is valiant at his own door.
站在家门口，狗也雄纠纠。
Will you let us have the specifications?
规格说明书可以给我们吗。