四头肌肌肉让你的膝进入完全的延长。
屈肌肌肉拉伸的能力随着年龄下降；
The ability of the flexor muscles to stretch decreases with age;
由于多余的平滑肌肌肉收缩时使气道狭窄从而产生麻烦。
Excess smooth muscle causes problems because when it contracts it Narrows the airways.
向上举起你的脚后跟，绷紧你的四头肌肌肉坚持10秒。
Without lifting your heel up in the air, tighten your quadriceps muscle as hard as you can for ten seconds.
这意味着：他们用眼睛微笑(面部上睑提肌肌肉的收缩)，而不仅仅是他们的嘴。
And they mean it: they smile with their eyes (a contraction of the orbicularis oculi facial muscles), not just their mouths.
骨骼肌肌肉控制着脊椎动物的精确的运动。成体骨骼肌的组成单元是肌纤维。
Precise voluntary movement in vertebrates is achieved by the fine coordinated control of skeletal muscles.
二头肌和三头肌肌肉小，并且他们永远需要显现出，并且这些是多半时间弱点冠军。
The biceps and triceps muscles are small and they take forever to develop and these is most of the time the weak point of champions.
二头肌和三头肌肌肉小，并且他们永远需要显现出，并且这些是多半时间弱点冠军。
The biceps and triceps muscles are small, and they take forever to develop, and these is most of the time the weak point of champions.
研究了优质鸡胸肌和腿肌肌肉性状间的相关关系，并对肉质性状进行了主成分分析。
The correlationship among meat quality traits of breast muscle and leg muscle in the quality chickens were studied.
二头肌和三头肌肌肉小，并且他们永远需要显现出，并且这些是多半时间弱点冠军。
The biceps and trice ps muscles are small and they take forever to develop and these is most of the time the weak point of champions.
因为你的膝在你的受伤之后在头几星期有些伤害，所以四头肌肌肉恢复力量可能有点困难。
Regaining the strength in your quadriceps muscles can be difficult, because your knee may hurt quite a bit in the first few weeks after your injury.
猪低诞生重量是同扩大的猪的肌肉纤维区域和和减少猪的最长肌肌肉柔软度联系在一起的。
Low birth weight is associated with enlarged muscle fiber area and impaired meat tenderness of the longissimus muscle in pigs.
本试验研究了优质鸡胸肌和腿肌肌肉性状间的相互关系，并对肉质性状进行了主成分分析。
The correlationship among meat quality traits of breast muscle and leg muscle in the quality chickens was studied.
在研究的开始阶段，他们做了来自两组的骨骼肌肌肉活组织检查，通过检查，他们能够评估他们的转录图谱。
At the start of the study, they took skeletal muscle biopsies from both groups, from which they were able to assess their transcription profile.
需要用针灸和草药治疗肌肉假性肥大和进行性肌营养不良的临床观察。
The clinical observation of treatment with acupuncture and herbs for muscular pseudohypertrophy and progressive myodystrophy are required.
肌肉发生的起始和生肌节的形成是胚胎肌肉发育中的两个关键事件。
The initiation of myogenesis and the formation of myotome are two critical eventsin myogenesis.
例如纤维性肌痛，这会导致肌肉和关节的疾病，还会伴有疲劳，睡眠和情绪问题。
Take fibromyalgia, which brings pain to muscles and joints, as well as problems with fatigue, sleep and mood.
腘绳肌是覆盖大腿后侧的三条长条形肌肉。
The hamstrings are three long muscles that cover the back of the thighs.
当我们的祖先身体被毛发覆盖时，当人感到沮丧或者寒冷的时候皮肤上的一种叫“立肌”的肌肉会收缩，使他们的毛发竖立起来。
When our ancestors were covered in fur, muscles in their skin called "arrector pili" contracted when they were upset or cold, making their fur stand on end.
不管你做多少仰卧起坐，你都不会看到清晰的肌肉轮廓或漂亮的六块肌，因为你的肌肉上有脂肪层。
You won't see muscle definition or a nice six-pack despite how many crunches you do, because of the layer of fat resting on top of your muscles.
一般来说，眼周肌肉包括上睑提肌的沉重，和全身其他肌肉的疲劳类似。
Generally speaking, heaviness of the muscles around the eyes, including the levator muscles that open the upper eyelids, is similar to fatigue of any muscle of the body.
在1850年，德国生理学家HermannvonHelmholtz把电线连在一只青蛙的腿肌上，这样肌肉收缩时就断掉了电路。
In 1850 German physiologist Hermann von Helmholtz attached wires to a frog's leg muscle so that when the muscle contracted it broke a circuit.
这些目标肌群应该处于放松的状态，这意味着当你在伸展某个肌群的时候，那部分肌肉不应有任何形式的负担。
The targeted muscle should be in a relaxed state, meaning the muscle should not be working to support you in any way while you are stretching it.
在你的肾盂附近，存在着一组被称为耻尾肌的肌肉(即pc肌)。
In your pelvis area, there exists a set of muscles, known as the Pubococcygeus (PC) muscles.
根据这种方法，他辨识到一种特别的微笑方式，位于颧骨和眼轮眶肌间的肌肉分别带动嘴角和脸颊肌肉提起。
Along the way he identified a particular type of smile that engages both the zygomatic major and the orbicularis oculi - muscles that raise the corners of the mouth and cheeks, respectively.
拉伸股四头肌：股四头肌是大腿前侧的肌肉，对于你提升膝盖和提高速度很重要。
Quadriceps Stretch: the quadriceps is the muscle in the front of the thigh, important for lifting your knees and increasing your speed.
第一种是肌酸(一种为肌肉提供能量的物质)的衍生物。
The first were derivatives of creatine, a substance that helps to supply energy to muscles.
研究工作己经表明，青年人长期卧床休息后，其肌肉量迅速减少，肌力水平急速下降。
Studies have shown that even young people's muscle mass and strength quickly deteriorate when they're confined to bed rest.
研究工作己经表明，青年人长期卧床休息后，其肌肉量迅速减少，肌力水平急速下降。
Studies have shown that even young people's muscle mass and strength quickly deteriorate when they're confined to bed rest.
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