Steining
井内砌圈, 砖石支护
🗣️ 情景例句
I bet I can go one hour in your class this morning and not feel a thing!
我打赌我今天上午到的健身班运动一小时之后丝毫不累。
How wide is this bridge?
这座桥有多宽？
Oh, that's quite early! Where are we going to meet?
噢，那很早！我们打算在哪儿会合？