Regioselective
[机] 特定选择的
🗣️ 情景例句
Would you begin, Ellen?
请你开始， Ellen
When could we typically expect delivery?
我们希望常规的发货时间是什么时候呢？
Oh, that's quite early! Where are we going to meet?
噢，那很早！我们打算在哪儿会合？