有一些特殊的词，遵循词变形的规律和习惯就好了。 roofn.顶部；屋顶；车顶；有…顶的； v.给…盖顶；盖上屋顶 The pillars have to support the weight of the...
roof n.顶部;屋顶;车顶;有…顶的;洞顶;隧道顶 v.给…盖顶;盖上屋顶 复数 roofs Tenants do not have to worry about leaking roofs and broken washing machin...
