Slipstone
n. (磨半圆凿的)成型油石
🗣️ 情景例句
No, no, you were right. I was wrong.
确实不容易 说对了。我错了。
A work ill done must be twice done.
未做好的活，需要重新做。
The airport was built years ago, but for some reason it could not be used then.
机场是许多年前建的，但由于某种原因当时未能启用。