In 1908, Cixi fell badly ill tensing that the end was near.

1908年，慈禧因生命即将结束而重病。

Her body tensing as she tilts her head.

当她歪着头时，她的身体绷紧了。

Second of all, if I have enough air, then that calms my whole system down and I don't have to sort of start tensing again.

其次，如果我有足够的空气，那么我的整个身体系统就会平静下来，我就不必再开始紧张了。

Progressive muscle relaxation — tensing muscle groups as you inhale and relaxing them as you exhale — has been effective for reducing nightmares.

渐进式肌肉放松——吸气时拉紧肌肉群，呼气时放松——对减少噩梦很有效。

Then she felt a sudden tensing of all his muscles. Swiftly, he dropped the hat to the floor and, reaching up, detached her arms from his neck.

接着她感到他浑身的肌肉突然紧张起来，可是他随即一扬头，把帽子甩在地上，同时腾出手来，把她的两只胳臂从他脖子上松开。

However, I see a lot of my students, because they're not used to the 'th', they're compensating for this weird sound with tensing up everything around your tongue.

然而，我看到我的很多学生，因为他们不习惯发“th”这个音，他们用紧绷舌头周围的一切来发出这个奇怪的音。

Instead of unconsciously tensing your muscles, try to tense your muscles on purpose, you just squeeze your muscles for a few seconds and then relax them all at once.

不要无意识地绷紧你的肌肉，而是有意识地紧缩肌肉几秒钟，然后立即放松。