Handdrill
手持式凿岩机
🗣️ 情景例句
What was your graduation thesis on?
你毕业论文是什么题目？
Every family has problems.
家家有本难念的经。
Imagine the effect on a reasonably advanced technological society,
那么可以设想，这将对这个社会产生何等的影响。但科技相当发达的社会，