就像那些六分钟、不流汗的计划。
在室内充分活动，在不流汗的情况下让血液流动起来。
Move around inside enough to get the blood flowing without breaking a sweat.
没有人不流汗就能成功。
不流汗就没有幸福。
于是，研究人员们用热感应照相机对这些不流汗的鸟进行了拍照。
So they photographed the birds - which don't sweat - with heat-sensing cameras.
掉皮掉肉不掉队，流血流汗不流泪。
Peel off the meat is not left behind, bloody sweat not shed tears.
掉皮掉肉不掉队，流血流汗不流泪。
Peel off the meat is not left behind, bloody sweat not shed tears.
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