Underreamer
扩孔器
🗣️ 情景例句
But it'll be better tomorrow.
但是明天就会好多了。
Work hard, otherwise you'll be sorry.
努力用功，否则你会后悔的。
In cities he refused to travel in a rickshaw, a two-wheeled cart pulled by a bare-footed man.
在城里，他拒绝乘坐那种赤脚车夫拉的两轮人力车。