A single breath.

• 一次呼吸

A single breath.的用法和样例：

例句

1. But not a single breath should be missed.
   但是不能忘记任何一次呼吸。
2. The pain has been likened to a red-hot knife in the ribs on each side.A stabbing pain with each breath.
   这种疼痛被比作插入两侧肋骨里面的炽热刀子，伴随着每一次呼吸而来的穿刺般的疼痛。