Underreamer
扩孔器
🗣️ 情景例句
Yes, let me try. Oh, it's difficult. Will you show me how to do it?
好吧，让我试试吧！哦，真不容易。能教我怎么用吗？
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 only person I know who has a skeleton in the cupboard is George Carlton,
我所认识的唯一的在柜中藏骷嵝的人便是乔治。卡尔顿，