基本解释装料门英汉例句双语例句As a very important document in international trade, bill of lading is regarded as a key to open the door of cargo holds.作为国际贸易中一种极其重要的单证，提单被视为“开启货舱的钥匙”。词组短语短语lading door dill 厅门地坎lading door safety switch 层门安全开关