[] (plies, plying, plied, plied) to travel regularly along a particular route or between two particular places (车、船)定期地来回,经常往返於◆airlines plying transatlantic routes 定期往返於跨大西洋航线的航空公司●ply your ˈtradeto do your work or business 从事;经营◆This is the restaurant where he plied his trade as a cook. 这是他做厨师的那家餐厅。