As we age we lose muscle tissue.
随着年纪的增大，我们会失去一些肌肉组织。
我拉伤了小腿肌肉。
He tore a muscle in his right thigh.
他拉伤了右大腿的一块肌肉。
Adrenalin was injected into the muscle.
往肌肉里注射了肾上腺素。
A muscle tear will leave a scar after healing.
肌肉撕裂在治愈后会留下伤疤。
The body is made up primarily of bone, muscle, and fat.
人体主要由骨、肌肉和脂肪组成。
Muscle cells need lots of fuel and therefore burn lots of calories.
肌肉细胞需要很多“燃料”，并因此燃烧大量卡路里。
They call rowing the perfect sport. It exercises every major muscle group.
他们把划船称之为完美的运动。它锻炼身体的各主要肌肉群。
那个人刚刚说的是肌肉吗？
It's more like a muscle, which tires easily.
它更像是肌肉，很容易疲劳。
When you improve in each workout, you add new muscle.
当你在每次锻炼中取得进步时，你都会增加新的肌肉。
As ciliary muscle contracts, it pulls on these tissues.
睫状肌一收缩，就拉动这些组织。
Other symptoms include muscle pain, headache, nausea, fatigue, and rash.
其他症状包括肌肉疼痛、头痛、恶心、疲劳和皮疹。
Unfortunately, there's little that can be done to relieve muscle soreness.
不幸的是，几乎没有方法能够缓解肌肉酸痛。
The body has to work to repair the muscle tears, but this doesn't happen immediately.
身体必须努力修复肌肉撕裂，但这需要一个过程。
The tiny fibers that are inside them are being torn apart as muscle soreness develops.
随着肌肉酸痛的增强，肌肉内部的细小纤维正被撕裂。
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