They help in storage and every detail of the supply process.为什么要加in?
问题描述：
They help in storage and every detail of the supply process.为什么要加in?
答
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...