作业帮vacuum 怎么查不到?
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vacuum 怎么查不到?
vacuum 怎么查不到?
vacuum 怎么查不到?
1.Native speakers like using "up" with some verbs to mean "completely" or in a tidy manner.Examples abound.
eat up:吃光
use up:用光
write up:整理好(笔记等)
2.Perfect examples of "vacuum up":
a.I vacuumed up the drawing room.我给客厅好好地吸了下尘.
b.Vacuum (up) the cake crumbs,would you?(From Cambridge Advanced Learner's Dictionary by Cambridge University Press)