Holing
[采矿]掏槽落煤法, [建]石板瓦钻孔
🗣️ 情景例句
Have you ever studied French?
你学过法语吗？
If he doesn't, will you wash the dishes.
如果他不，你会洗碟子吗？
What was the conference like?
这个会议怎么样？