extensor的音標為[?k?stens?(r)]，基本翻譯為“伸肌”，速記技巧為“e-s-t-e-n-s-o-r，伸的”。

extensor這個詞來源于拉丁語extensio，意為“伸展”。它的變化形式包括過去式extended，過去分詞extended，現在分詞extensor，形容詞extensive。相關單詞包括extension，extend，extensive，extensibility，extensometer，extensile等。Extension這個詞可以指延伸、擴展，extend這個詞可以指伸出、給予，extensive這個詞可以指廣闊的、廣泛的。Extensibility指的是可擴展性，extensometer是測伸儀器，extensile指的是可伸展的。這些單詞都與extensor這個詞有著密切的聯系，描述了物體在空間中的伸展和擴展。

extensor:

1. extensor muscle

2. extensor power

3. extensor reflex

4. extensor tone

5. extensor tendon

6. extensor weakness

7. extensor rigidity

例句：

1. The patient has decreased extensor muscle strength.

病人伸肌力量減弱。

2. The patient has a stiff neck and extensor tone is increased.

病人頸部僵硬，伸肌張力增加。

英文小作文：

When I am feeling tired, I often use my extensors to stretch and relax. It helps me to feel refreshed and rejuvenated. However, sometimes my extensor muscles become sore and I need to rest them for a while. I realize that it is important to use all of my body"s muscles equally to maintain good health and well-being.