The large muscles they need for this give them a distinct shoulder hump.

它们做这些需要很大的肌肉力量，从而导致它们的肩膀处有一块明显的隆起。

Take a look at this large muscle we made to lift and lower a leg.

来看一下我们做的这一大块肌肉，可以把腿提起、放下。

Aweightlifter on steroids will develop larger muscles and do so faster than a clean weightlifter.

一个服用类固醇举重运动员的肌肉会比一个干净的运动员生长得更大更快。

Larger muscles like the quads will then benefit from this increase whereas small muscles might not.

像四头肌这样的大肌肉会从这种增加中受益，而小肌肉不会。

It's why, generally, men have larger muscle mass than women as they have higher levels of testosterone.

这就是为什么通常男性的肌肉质量会比女性的要大，因为男性有更多的睾丸激素。

" Guns, " here, means the biceps, which are the large muscles in your upper arm.

“枪支”在这里指的是二头肌，也就是你上臂的大块肌肉。

" Bodybuilders" are people who lift heavy weights to have very large muscles, and then they enter competitions.

“健美运动员” 是举重物以拥有非常大的肌肉，然后参加比赛的人。

For example, apes have heavier brows and larger neck muscles, which had to move differently when the apes were speaking.

例如，类人猿的眉毛较重，颈部肌肉较大，当类人猿说话时，这些肌肉必须以不同的方式移动。

It's plausible that having this large muscle press up and forwards on the maxilla for 8 hours a day and hopefully while you're sleeping.

上颌骨每天受到这块肌肉八个小时的上压和前推，貌似是有效的，并且最好当你睡着的时候也能这样。

It begins with an involuntary spasm or sudden contraction of the diaphragm, the large dome-shaped muscle below our lungs that we use to inhale air.

它开始于一种无意识的痉挛或膈肌的收缩，膈肌是个大的、圆顶形的肌肉，位于肺的下方，用于吸入空气。

Fighting, he says, is an information-seeking device, and although the toughest men sport large muscles and scars, the toughest women are harder to spot without a scrap.

Diego Gambetta还说，打架是“一种寻求信息的方式”，你很容易判断出最凶狠的男性，他们通常有着结实的肌肉和伤疤，但最凶狠的女性却没有这些特征，只能通过打架来判断。