;Investment is needed to reduce the backlog of repairs.
需要投资来減轻积压的维修
。
；没交付的订货
词Investment is needed to reduce the backlog of repairs.
需要投资来減轻积压的维修。
It will take a month to clear the backlog of work.
要花一个月的时间才能清理完积压的。
After her summer vacation,she has got a huge backlog of work to do.
暑假休假以后,她手头有许多积压的要做。
A huge backlog of work had built up.
一大
积压了起来。
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