bilateral breathing

基本解释

Similarly, many swimmers have attempted to learn bilateral breathing but have found it too hard and given up.
同样，很多游泳者曾企图学会双边换气，但却发现它太难，然后放弃了。
On the third length, breathe every three strokes, with each hand-hit counting as one stroke. This is commonly called bilateral breathing.
第三个长度采用三划一换气，注意每只手的划水都算一划。这样的换气方式就是通常说的双侧呼吸。
Fortunately after about 2 weeks things begin to get easier and bilateral breathing technique starts to require much less concentration and persistence.
幸运地是，大约2个星期后，事情开始变得更容易了，双边换气技术开始对注意力集中和持久性要求更少了。