exhalations

to control a wheelchair, for example, two short sniffs means a forward move, while two short exhalations means reverse.

比如，患者想要控制一台轮椅，可以用两次短促吸气来示意前进，两次短促呼气来示意后退。

it holds a wide tube that will route my exhalations into plastic bags for analysis.

在上面一支大口径管，会把呼出的气体收集到塑料袋中用来分析。

repeatedly counting up to 21 consecutive exhalations [ ed. note: presume inhalations occurred as well.]

在数到21的时间里连续吐气，反复做（设想在这期间也有吸气发生）。

with steady awareness of our inhalations and exhalations, the breath can become an equanimous constant through the ups and downs of our daily life.

藉由对于呼吸的稳定专注觉知，能使我们在日常生活的起起落落之中慢慢变得平和稳定。