Moles have powerful forefeet for digging.鼹鼠的前足非常有力，擅长挖洞。Unsightly moles can be removed surgically.不雅观的痣可以手术去除.Moles dug tunnels under the lawn.?鼠在草地下面打洞....
这书橱装有50册书,但它能装下100册.The bookcase contains fifty volumes but holds a hundred.这书橱很不结实,装不了这么多书.This bookcase is too unstable to hold so many books.你分组件买这个书橱,再把它们卡榫对准组合在一起.You buy this bookcase in sections and slot them toge...