be covered with .be covered by 的区别?
问题描述：
be covered with .be covered by 的区别?
答
be covered with一般较具体:The mountain tops are covered with snow.白雪覆盖着山顶. be covered by一般较抽象:This area has not been covered by the communication net.这个地区还不在通讯网的覆盖之内....