Paddles are used especially to propel canoes and kayaks.短桨特别用于划独木舟和小艇.They use oars to propel boats.他们用浆推进船只.We must develop industries with local advantages and propel the development of key areas.积极发展有特色的优势产业,推进重点地带开发....
The racer meant to win the 500 - mile race at all hazards.这位竞赛者决心不顾一切危险,赢得这场500英里的车赛.Toxicologists attempt to identify and understand toxic hazards.毒理学家试图找出并了解毒害风险。We perfected a hand-signal system so that he could keep ...