We use service centers at major stores. They ship goods back to our national service center for repairs.
我们采用大店服务中心,他们可把产品运送到我们的国内服务中心维修。
that a series of deep soundings was obtained in the Atlantic and the first samples were collected by dredging the bottom.
才在大西洋测得一个个海水深度,同时通过挖掘海底,取得了研究海底的首批样品。