Meaning of yòng bu zháo:
yòng bu zháo
用不着
Verb
not need; have no use for
Nǐ rúguǒ méishì jiù yòng bù zháo lái.
你如果没事就用不着来。
You don't need to come if there's nothing going on.
Zhè bǎ yàoshi wǒ yòng bu zháo le.
这把钥匙我用不着了。
I have no use for this key anymore.