Nicotine also binds to receptors on skeletal muscles causing relaxed muscle tone.

尼古丁还可与骨骼肌中的受体结合，导致肌张力下降。

Usually, newborns with Prader-Willi syndrome have low muscle tone making them extremely floppy.

普拉德-威利综合征的新生儿常伴随肌张力低下，肌肉非常松弛。

Astronauts on the space station already perform specific exercises to keep their weight-bearing muscles toned.

为了不让肌肉松弛，太空站上的宇航员已经开始一些具体的锻炼。

This results in seizures, motor delay, low muscle tone, and rapid degeneration of the nervous system.

这会导致癫痫、运动发育迟缓、肌张力低下和神经系统快速的退行性变。

That led to a 19 percent decrease in muscle tone during a trip to the International Space Station.

这样一来，宇航员在国际空间站期间，他们的肌肉张力会下降19%。

The level of consciousness may also decrease and give rise to flaccid paralysis, where there's reduced muscle tone.

意识水平也可能下降，而且随着肌肉张力的降低，也可能发生弛缓性麻痹。

When the nerves in the face have been damaged, the lack of muscle tone can morph the facial bones.

当面部神经受损时，由于缺乏肌肉张力，面部骨骼会发生改变。

A regular brisk walk will improve muscle tone.

【tone】经常快步走能使肌肉更加紧实。

Exercise can strengthen and tone muscles.

【tone】锻炼能使肌肉更强健结实。

Now look at the old ones from atlanta, the muscle tone has changed.

对比在亚特兰大收到的老照片 肌肉的状况改变了。