tonus
n. （身体组织，尤指肌肉）痉挛，紧张；音调
n. （Tonus）（意、法、巴西、加、俄）托努斯（人名）
例句
Muscle tonus is, in a sense, the beginning of behavior.
肌肉强直性是、就某种意义来说、行为的开端。
The second was the female victim, great weakness and complete lack of physical tonus.
第二个原型是受气的女人，导致她的肌肉软弱无力。
Naturally, then, when you stand up to talk to a group of people, the tonus of your muscles will rise.
你面对一群人讲话，肌肉紧张那是再自然不过的事。
