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。

youdao

I've often seen swimmers who have been working on their Stroke Length, swimming with an impressively low SPL – let's say 12 strokes for 25 yards – but a thoroughly inefficient style.

我经常看到泳者练习他们的划手滑行长度，有些是让人印象深刻的低划数游泳（譬如说划手12次游25码）但是非常没有效率的游泳技巧。

youdao

These data do not lend support to the use of thigh-length GCS in patients admitted to hospital with acute stroke.

这些数据并不支持长筒gcs对急性中风住院患者血栓发生有预防作用。

youdao

The English conditions suit McGrath, who can fire the ball on a good length with sharp pace and bounce, letting the pitch or a rash stroke from the batsman do the rest.

BBC: McGrath sets sights on Atherton