Underreamer
扩孔器
🗣️ 情景例句
Could you put that into more specific terms?
您能不能说得明确一点？
Then, all of a sudden, it became cloudy and began to rain.
可是突然天就变了，乌云密布并下起雨来。
Maybe he could help James. So they took the boy to visit him.
也许他能给詹姆斯治病。于是他们带着詹姆斯去找他。