There are trees on either side of the road.此句中either可以换成each吗?

题目

There are trees on either side of the road.此句中either可以换成each吗?

答案

each可以,不可以用both,因为你要注意到后面的side,
同时either是两边的意思(来自于或...或之意).
整句话的意思说;道路两边都有树.