中译英：这些刷子不是用来刷牙的（be used for doing)
问题描述：
中译英：这些刷子不是用来刷牙的（be used for doing)
答
These brushes aren't used for tooth-brushing.
be used for [简明英汉词典]
用来做...
答
These brushes aren't used for brushing the teeth.
答
These brushes are not used for brushing teeth.