Pregrouting
预灌浆
🗣️ 情景例句
Change the light bulb, it's burnt out.
换一个灯泡吧，它烧坏了。
He hasn't done any worthwhile work in five years.
这五年来他没做过一件正经事。
Without it, nothing could ever be brought to a conclusion; everything would be in state of chaos.
不准时将一事无成，事事都会陷入混乱不堪的境地。