?muscle是指人體內(nèi)的肌肉組織，它是由肌纖維組成的，具有收縮和伸展的能力，可以幫助身體進(jìn)行運(yùn)動(dòng)和保持姿勢(shì)。除了在人體內(nèi)起著重要的生理作用外，在語(yǔ)言中也常被用作比喻，表示力量、實(shí)力或影響力。

muscle這個(gè)詞源于拉丁語(yǔ)musculus，意為“小鼠”，因?yàn)楣艜r(shí)候人們認(rèn)為肌肉像老鼠一樣活躍。它的復(fù)數(shù)形式為muscles。

在日常生活中，我們經(jīng)常使用muscle來(lái)描述身體部位。比如：

1. He has strong muscles from lifting weights at the gym.（他因?yàn)樵诮∩矸颗e重而擁有強(qiáng)壯的肌肉。）

2. The athlete pulled a muscle while running and had to s the race.（這位運(yùn)動(dòng)員在跑步時(shí)拉傷了肌肉，不得不停止比賽。）

3. My back muscles are sore from sitting at my desk all day.（我整天坐在桌子前，背部肌肉很酸痛。）

此外，在醫(yī)學(xué)領(lǐng)域也經(jīng)常使用muscle來(lái)指代特定的部位或類型的肌肉。比如：

4. The doctor examined his leg muscles and found no signs of injury.（醫(yī)生檢查了他的腿部肌肉，沒(méi)有任何受傷的跡象。）

5. The heart is a muscle that pumps blood throughout the body.（心臟是一種肌肉，它將血液泵送到全身。）

除了指代具體的身體部位外，muscle也可以用來(lái)形容力量、實(shí)力或影響力。比如：

6. The company used its financial muscle to acquire its compes.（這家公司利用其財(cái)務(wù)實(shí)力收購(gòu)了競(jìng)爭(zhēng)對(duì)手。）

7. She flexed her political muscles and got the bill passed.（她發(fā)揮她的影響力，使法案通過(guò)了。）

8. The team showed their mental muscle by overcoming a tough opponent.（這支球隊(duì)通過(guò)戰(zhàn)勝?gòu)?qiáng)大的對(duì)手展示了他們的心理實(shí)力。）

總的來(lái)說(shuō)，muscle是一個(gè)多功能的詞匯，在不同場(chǎng)合下可以有不同的含義和用法。

例句參考：

1. I can feel the muscles in my arms getting stronger from lifting weights every day.

（我能感覺(jué)到每天舉重使我手臂的肌肉變得更強(qiáng)壯。）

2. The dancer's graceful movements showed off her well-toned muscles.

（舞者優(yōu)美的動(dòng)作展示了她結(jié)實(shí)健美的肌肉。）

3. He pulled a muscle in his neck while playing tennis and had to take a break from the game.

（他在打網(wǎng)球時(shí)頸部拉傷了一塊肌肉，不得不暫時(shí)休息比賽。）

4. The doctor recommended physical therapy to help strengthen the muscles in her injured leg.

（醫(yī)生建議進(jìn)行物理治療來(lái)幫助加強(qiáng)她受傷的腿部肌肉。）

5. The company's financial muscle allowed it to expand into new markets and increase its profits.

（這家公司的財(cái)務(wù)實(shí)力使其能夠擴(kuò)張到新市場(chǎng)并增加利潤(rùn)。）

隨機(jī)例句：

1. He was a man of great muscle, able to lift heavy objects with ease.

2. The boxer showed off his impressive muscles during the weigh-in before the fight.

3. She strained a muscle in her back while moving furniture and had to take a few days off work.

4. The politician used his political muscle to push through controversial legislation.

5. The team's coach emphasized the importance of mental muscle as well as physical strength in their training sessions.