讀音：vlsti

詞性：名詞

1. 速度，速率

用法：表示物體在單位時間內所經過的路程。

例句：

1. The velocity of the car was too fast for the driver to control.

這輛車的速度太快，司機無法。

2. The velocity of sound is faster than the velocity of light in water.

聲音在水中的傳播速度比光速快。

3. The velocity of the rocket gradually increased as it left the earth's atmosphere.

火箭離開地球大氣層后，速度逐漸增加。

4. The velocity of a bullet can reach over 1000 meters per second.

子彈的速度可以達到每秒1000米以上。

5. The velocity of a hurricane can reach up to 200 kilometers per hour.

颶風的速度可以達到每小時200公里。

同義詞及用法：

1. speed：表示物體運動時所經過的路程與時間的比值，與velocity含義相近，但speed更常用于日常口語中。

例句：

1. He was driving at a high speed on the highway.

他在高速公路上以很快的速度駕駛著車子。

2. The speed of light is approximately 300,000 kilometers per second.

光的速度大約是每秒300,000公里。

3. I need to increase my running speed if I want to win this race.

如果我想贏得這場比賽，我需要提高跑步速度。

4. The speed of the train gradually slowed down as it approached the station.

火車接近站臺時，速度逐漸減慢。

5. The speed of a cheetah can reach up to 120 kilometers per hour.

獵豹的速度可以達到每小時120公里。

2. pace：表示物體運動時每單位時間所經過的路程，與velocity含義相近，但pace更常用于描述步伐或節奏。

例句：

1. He walked at a slow pace, enjoying the scenery along the way.

他以緩慢的步伐走著，沿途欣賞著風景。

2. The pace of life in the city is much faster than in the countryside.

城市的生活節奏比農村快得多。

3. The horse was running at a steady pace, not too fast or too slow.

馬以穩定的步伐跑著，不快不慢。

4. We need to increase our work pace if we want to finish this project on time.

如果我們想按時完成這個項目，就需要加快工作節奏。

5. The pace of the music gradually increased, making everyone want to dance.

音樂的節奏逐漸加快，讓每個人都想跳舞。

3. momentum：表示物體運動時所具有的力量和動能，在物理學中也有特殊含義，與velocity含義有一定區別。

例句：

1. The momentum of the wave was strong enough to knock down the surfer.

浪的力量足以把沖浪者擊倒。

2. The car gained momentum as it went down the hill.

車子在下坡時獲得了動力。

3. She lost her momentum and fell while trying to run up the stairs.

她試圖跑上樓梯時失去了勢頭，摔倒了。

4. The team's winning streak gave them a lot of momentum going into the playoffs.

球隊的連勝為他們進入季后賽提供了很大的動力。

5. The snowball quickly gained momentum as it rolled down the hill.

雪球在滾下山時迅速獲得了速度。

4. celerity：表示物體運動時的迅速和敏捷，與velocity含義相近，但更常用于文學作品或正式場合。

例句：

1. He moved with great celerity, dodging all of his opponent's attacks.

他移動迅速，躲避了對手的所有攻擊。

2. The cheetah is known for its celerity, being able to reach high speeds in a matter of seconds.

獵豹以其敏捷聞名，能夠在幾秒鐘內達到高速度。

3. She typed with great celerity, finishing her work in record time.

她打字速度很快，在極短的時間內完成了工作。

4. The dancers moved with grace and celerity, making the performance mesmerizing.

舞者優雅而敏捷地移動，使表演令人著迷。

5. The runner's celerity helped her win the race.

這位跑步者的敏捷幫助她贏得了比賽。

5. swiftness：表示物體運動時的迅速和敏捷，與velocity含義相近，但更常用于口語或日常場合。

例句：

1. The swiftness of the cheetah's movements amazed everyone watching.

獵豹的敏捷動作讓所有觀眾都驚嘆不已。

2. The swiftness of the horse's gallop made it seem like it was flying.

馬飛快的奔跑讓它看起來像在飛行。

3. She ran with great swiftness, trying to catch up to the others ahead of her.

她以極快的速度跑著，試圖趕上前面的人。

4. The swiftness of the river's current made it dangerous for anyone to swim in.

河流湍急的水流使得任何人都不敢在里面游泳。

5. The thief escaped with incredible swiftness, leaving behind a trail of chaos and confusion.

小偷以令人難以置信的速度逃脫了，留下一片混亂和困惑。