这船常航行于伦敦与悉尼之间.The ship plies between London and Sydney.我身处伦敦市中心比驾船航行于茫茫大海更感到孤单。I feel lonelier in the middle of London than I do on my boat in the middle of nowhere.此后四年中,他往返航行于密西西比河上.For the next four years he steamed u...