Underclay
n. (煤层下的)底黏土层
🗣️ 情景例句
Hello, my name is Li Ming and we have a reservation for party tonight.
喂，您好。我叫李明，我们在你们这预定了今晚聚会。
Won't you have a bit of this cake?
请尝一点蛋糕吧！
That's the ship we travelled on.
这是我们所乘的那条船。