Deuterogene
后成岩
🗣️ 情景例句
No, no. I just changed my seat.
不 不。我刚才换了一下座位。
We must have your LC at least one month before the time of shipment.
我们必须在船运前一个月收到你们的信用证。
Before? After? said the doctor.
“饭前？饭后？”医生说。