开挖

kāi wā yú chí

开挖鱼池

dig a fishpond

kāi wā jī xiè

开挖机械

excavate machinery

kāi wā qú dào

开挖渠道

dig a channel

dāng gōng rén dào dá shéng zi de mò duān shí tā men jiù zhī dào yào kāi wā le

当工人到达绳子的末端时，他们就知道要开挖了。

When workers reached the end of the string, they knew to dig up.

nà xiē gōng rén kāi shǐ kāi wā chí táng

那些工人开始开挖池塘。

The workers began excavating the hole for the pool.