chōng fèn
你的理由不充分
nǐ de lǐyóu bù chōngfèn
Your reason is not sufficient
准备工作做得很充分。
zhǔnbèi gōngzuò zuò de hěn chōngfèn
The preparatory work was done very thoroughly
充分利用有利条件
chōngfèn lìyòng yǒulì tiáojiàn
Make full use of favorable conditions