For firefighting, an SCBA system makes a lot of sense.

对消防工作，SCBA系统益处多多。

Self-contained breathing apparatus (SCBA) may BE required.

可能需要用自给式呼吸器。

In emergency situations, wear a self-contained breathing apparatus (SCBA).

紧急形势下，使用自给式呼吸器。

In emergency situations, self-contained breathing apparatus (SCBA) must be used.

紧急形势下，必须使用自给式呼吸器。

Self - contained breathing apparatus ( SCBA ) may be required.

可能需要用自给式呼吸器.

Self-contained breathing apparatus(SCBA) may be required to prevent asphyxiation of rescue personnel.

可能要求有自给式呼吸器（SCBA），以防止救援人员窒息。

Self-contained breathing apparatus (SCBA)may be required to prevent asphyxiation of rescue personnel.

可能要求有自给式呼吸器（SCBA），以防止救援人员窒息。

An East Hampton, New York firefighter wearing SCBA is engulfed in smoke as he uses a tool at a car fire.

纽约州东汉普顿市一位身穿SCBA的消防队员在汽车火灾中使用一个工具时，被吞没在烟雾中。

Self - contained breathing apparatus ( SCBA ) may be required to prevent asphyxiation of rescue personnel.

可能要求有自给式呼吸器 ( SCBA ),以防止救援人员窒息.

Because of the problems with SCBA systems, any respirator that you are likely to use will have a filter that purifies the air you breathe.

由于SCBA系统存在的不足，任何您可能用到的呼吸器都会有一个过滤器来净化呼吸所需空气。