Slipstone
n. (磨半圆凿的)成型油石
🗣️ 情景例句
Gerald.
Gerald。
I will have done it by the time you come back.
在你回来之前，我会做完它。[将来完成时，表示将完成…，会做完…]
Every year, several classes visit the factory.
每年都有好几个班去参观这家工厂。