Holing
[采矿]掏槽落煤法, [建]石板瓦钻孔
🗣️ 情景例句
How long is this flight?
这趟飞行有多长时间？
We really need more specific information about your technology.
我们需要与贵公司技术相关更专门的资讯。
The over-punctual can be as much a trial to others as the unpunctual.
早到的人同迟到的人一样令人讨厌。