他们已经开始制造用于水下通气管主体所需的工具了吗？
Have they started to make the tool for the main body of the snorkel?
可用嘴去吹，但不要用通气管。
主管、支管和通气管均为软管。
The main pipe, the branch pipe, and the breathing pipe all are hoses.
僧人与外界唯一的联系就只通过通气管与铃声。
His only connection to the outside world was an air tube and a bell.
给出了通气管和潜望镜观察系统组合应用的实例。
Examples of snorkel-periscope system combination applications are given.
潜水员携带一根通气管就可以在水下呆很长时间。
With a snorkel, however, a diver can stay under water for quite a long time.
潜水员携带一根通气管就可以在水下呆很长时间。
With a snorkel, however, a diver can stay under water for quite a long time.
应用推荐