They can tense up, they might tense their shoulders, they might tense their fingers.

们可能神经，们的肩膀可能会，们也可能会手指。

Buck threw himself forward, tightening the traces with a jarring lunge.

巴克挺身向前，一个冲刺了缰绳。

This is one, relaxed and slumped, and here is the other, upright and tense.

一个 ，放松的，倒下的；另一个，坐直的，的。

Their minds are relaxed and not straining on a particular task.

们的大脑是放松的，而不是在一个特殊的项目上。

Tense your abs, lift the right leg, and pull it to your chest.

腹肌，抬起右腿，拉到胸前。

This is the same amount of tension that you need to hold the 'th' position.

这和发“th”音舌头的程度是相同的。

Notice that the tongue is not completely relaxed, there's a little tension.

注意舌头并不是完全放松的，要稍微一下。

Hans paid out the rope, permitting no slack, while Pete kept it clear of coils.

汉斯放出绳子，并且让绳子，而皮特则把绳子整理了一下，不使绳子打结。

Professor Trelawney has stiffened as though unable to believe her ears.

特里劳妮教授浑身一下子了，似乎无法相信自己的耳朵。

It stretched beneath his weight, and then ripped.

屏障在的重压下，随即撕裂开来。

Duhobret labored three years in this way, giving himself no time for exercise or recreation.

杜霍布赖特以这种方式受了三年的苦，既没有机会练习，也没有时间使自己的神经得到放松。

They vocalised, tensed their muscles, arched their backs, and fussed or cried.

们发出声音，肌肉，弓起背，开始烦躁或哭泣。

Suddenly, he tensed up and arched his back, stretching.

突然间，身体，弓起后背，开始做伸展运动。

Just as the body tightens with age, however so does the mind.

正如身体会随着年龄的增长而一样，头脑也会随着年龄的增长而。

I could literally see people's back straighten as they started to speak into the microphone.

我甚至能看到人们开始对着麦克风讲话时后背都了。

He took a step back from me, his jaw suddenly clenched.

朝后退了一步，下巴突然了。

Clench them and you hold in the gold.

它们你就可以憋住。

They're tense so they get tired and as they're tired they get more tense. Tired, OK.

肌肉导致肌肉疲劳，肌肉疲劳以后会导致肌肉更。疲劳，好。

Buck tightened the traces, then slacked them for a matter of several inches.

巴克先把缰绳，然后又把它放松了大约几寸。

Claire listened and stiffened, remembering her mother's voice that became low and dramatic in a crisis.

克莱尔听着，身体突然了，她想起她母亲每次遇到危机的时候，说话的声音就会很低，很夸张。