covered by...
be coverd with...XX be coverd with sth.就是XX被某物覆盖
be covered with ... : 被...覆盖,表示具体的覆盖.如被雪/草地/布/被子/盖子/罩子等东西盖住.
The
furniture was covered by a lot of dust.
家具上满是灰尘.
be covered with
moss
长满绿苔
be covered with snow all the year round
终年积雪
be covered with与 be covered by 这两个词语都有“由。。。覆盖”之意
介词with用于主动或被动语态均可，指“用。。。覆盖/掩盖”，表状态
介词by用于被动语态，引出动作的逻辑主语，表动作
be covered by表示一种被动，意为被...覆盖，埋没，（与人的活动相关）
be covered with表示覆盖了...与自然界有关
注意：通常说be covered with snow,
以上是觉得别人一些好的说法，希望帮到你。o(∩_∩)o
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