Deficience
n. 機能不全; 缺乏; 缺點（等于deficiency）
??? 情景例句
Absolutely right.
完全正確。
One never loses anything by politeness.
有禮貌對自己不會吃虧。
Some children were playing games on the bank and there were some people rowing on the river.
河岸上有些孩子正在玩耍，河面上有些人正在劃船。