Pregrouting
预灌浆
🗣️ 情景例句
Where are the shopping carts?
购物车在哪儿？
The plate is dirty, Would you bring me a clean one, please?
这碟子是脏的，请你拿个干净的给我。
I had a letter from my sister yesterday.
昨天我收到了姐姐的一封信，