schoolwork that is not up to the mark.
未达标准
学业成绩
作业,课堂作业,课
作业作业;课程
;;
;
室, 课堂;师;schoolwork that is not up to the mark.
未达标准学业成绩
The important machinery of the schoolwork soil compaction is the vibroll whose superiority makes it take 90% of the market of road roller.
压实作业重要机械就是振动压路机，振动压路机压实优越性使其占压路机市场90%份额。
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