preperation and repair

问题描述:

preperation and repair
do they have the form of plural

repair用作名词时,常用复数形式. do / carry out repairs to a damaged car修理受损的汽车 [注意] 以下短语中repair不用复数. in (good) repair处于完好状态 in bad repair年久失修 out of repair坏了(不能使用了)...