Meaning of wā:
wā
挖
Verb
to dig; to excavate; to scoop out
Háizimen zài shātān shàng kāixīn de wā dòng.
孩子们在沙滩上开心地挖洞。
The children are happily digging holes on the beach.
Tāmen yào zài zhèlǐ kāishǐ wājué gōngzuò.
他们要在这里开始挖掘工作。
They are going to start the excavation work here.
Háizimen zài shātān shàng yòng chǎnzi wā dòng.
孩子们在沙滩上用铲子挖洞。
The children are using shovels to scoop out holes on the beach.