打井 (dá) — to dig a well; to drill a well | Dicionário de Chinês TongTong

Definição

Separable verb meaning 'to dig/drill a well' — a fixed activity, not something you swap objects on. Insert 一口 +井 between 打 and the rest: 打了一口井.

verb

to dig a wellto drill a well

打井。
Tā men zài cūn hòu dá.
They are digging a well behind the village.
。
Qù nián zhè lǐ dǎ le yì kǒu shēn jǐng.
Last year they drilled a deep well here.
。
Dǎ jǐng xū yào zhuān yè shè bèi.
Drilling a well requires professional equipment.