Primetin
报春花黄素
🗣️ 情景例句
We'll open a letter of credit if you promise to effect shipment one month earlier.
如果你方答应提前一个月交货，我们就同意开信用证。
When the phone rang, I was painting upstairs.
当电话铃响的时候，我在楼上画画。
Do you want any meat today.Mrs. Bird?
您今天要买点肉吗，伯德夫人？