"频繁 ----- frequently,反复"------ repeatedly
again and againtime and againover and over again希望能帮到你，不明白还可以追问.你要快点采纳哟，嘻嘻！！
weshouldmakefulluseofwater.
busybusy
frequent adj.
waterrecycling或Recyclingofwater
over and over again。还有好多。不知道你要用的语境
应该是frequent
反复 [词典] repeatedly; again and again; reversal; relapse; reiteration; [例句]这个计划是经过反复讨论而产生的。The plan was born out of repeated discussions.
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张祝君1
