巨大的圆柱形贮气罐huge cylindrical gas tanks潜水员向海岸走去时，铅坠和氧气罐使他们步履维艰。Lead weights and air cylinders encumbered the divers as they walked to the shore.较小的机组直接装在贮气罐上.The smaller units are mounted directly on the receiver tank....
"Why don't you borrow your sister's car?" said Cassandra stiffly.“你为什么不借用你姐姐的车呢？”卡桑德拉生硬地说道。Would you excuse us for a minute, Cassandra?卡桑德拉，我们出去一会儿你不介意吧？Cassandra noticed him because he was good-looking.卡桑德拉注意到...