Atoms of iron in the nail combine with atoms of oxygen from the air to form molecules of iron oxide, or rust.钉子里的铁原子与空气中的氧原子结合后形成氧化铁分子，也就是锈。But if you offered to combine with them I would see no objection.但是假使你想同他们联合,我并不...
我去了书店和图书馆查找资料，但什么也没找到。I turned to bookshops and libraries seeking information and found none.我拥有一家书店，想要扩大业务。I owned a bookshop and desired to expand the business.我曾在几家书店停留，翻看里面的书。I stopped in several bookstores to browse...