Those patients should be given a face mask to wear, preferably one that provides filtration of their expired air.

必须拿口罩给病患戴上，口罩最好能过滤患者呼出的空气。

Under these circumstances, the free margins of the cords can, during phonation, be more easily blown apart by the pressure of expired air.

在这些情形下，声带闲置的边缘在发声过程中就能够更轻易的被呼出空气的压力所吹开。

A trademark used for a device that detects and measures alcohol in expired air so as to determine the concentration of alcohol in a person's blood.

通过检测和测量呼出空气中的酒精含量，来确定某人血液中的酒精浓度的一种仪器的商标。

The priority of all treatment is to sustain life, either through emergency resuscitation (Expired air Resuscitation or External Cardiac Massage), or by controlling bleeding and shock.

所有治疗都应以维持生命为优先，或者通过紧急的救助，或者通过控制流血和休克。

The rap doesn't shy away from the nation's problems. Air pollution is mentioned. So are entrepreneurs whose rapaciousness sickened babies with melamine-laced milk and expired vaccines.

这首说唱没有回避中国的问题。空气污染被提到了。因不良商家的贪婪，而生产导致婴儿患病的三聚氰胺奶粉，还有过期疫苗。