They will be your most important safety devices.
他们将成为你最重要的安全装备。
Never tamper with safety devices in valves or cylinders.
禁止堵塞阀门或钢瓶的安全装置。
Before starting, check whether the safety devices are reliable.
开机前检查安全装置是否可靠。
She did not use any safety devices, such as a seat belt or parachute.
VOA: special.2011.06.12
Safety experts estimate that the restraining devices save more than four thousand lives a year in the United States alone.
VOA: special.2010.02.09
But there are many methods and protective devices that can increase a climber's safety.
VOA: special.2009.12.09
应用推荐