They help in storage and every detail of the supply process.为什么要加in?

They help in storage and every detail of the supply process.为什么要加in?

题目
They help in storage and every detail of the supply process.为什么要加in?
答案
help 这里是不及物动词help in sth = 有助于某事,这是固定搭配,这里举些类似句子:Being polite helps in creating a good impression with clientsTraffic lights help in controlling traffic flow and reducing t...
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