be made by 后可以接工具麽?

问题描述:

be made by 后可以接工具麽?
辅导书里说be made by一定加人,with加工具.
但例句是:Bikes are made with machines by workers.
我就奇怪~

be made by+人,be made with+工具.
Bikes are made with machines by workers.
句意是:“自行车是【由工人们】【用机器】生产的”.be made by 后可以接工具麽?be made by 后一般不接工具,如果接【机器】,我们可以把【机器】看做是【操作者】,你说是吗?