sù dù
speed
Practice writing with stroke order guidance, audio pronunciation, and interactive exercises in our mobile app.
Step-by-step stroke order animations
Native speaker audio pronunciation
Interactive writing recognition
火车以每小时200公里的速度行驶。
huǒchē yǐ měi xiǎoshí 200 gōnglǐ de sùdù xíngshǐ.
The train travels at a speed of 200 kilometers per hour.
他以最快的速度跑完了100米。
tā yǐ zuì kuài de sùdù pǎo wánle 100 mǐ.
He ran 100 meters at the fastest speed.
这个程序的运行速度非常快。
zhège chéngxù de yùnxíng sùdù fēicháng kuài.
This program runs very fast.
快 (kuài)
fast
速 (sù)
speed
慢 (màn)
slow
迟 (chí)
late
The Chinese word 速度 (sùdù) for "speed" is composed of two characters: 速 (sù) and 度 (dù). The character 速 originally meant "to hasten" or "to hurry," and it is composed of the radical 辶 (chuò), which indicates movement, and the character 足 (zú), which means "foot." The character 度 originally meant "to measure" or "to calculate," and it is composed of the radical 禾 (hé), which indicates grain, and the character 刀 (dāo), which means "knife." When combined, the characters 速 and 度 create the word 速度, which literally means "the measure of hastening" or "the degree of speed." This compound word is used to describe the rate at which something moves or changes.
