Usage note
加速表示让速度变快。
jiā sù biǎo shì ràng sù dù biàn kuài。
加速 means to make something faster.
Context note
加速常用于交通、变化和动作。
jiā sù cháng yòng yú jiāo tōng 、 biàn huà hé dòng zuò。
It is often used with transport, changes, and actions.
5 examples
车开始加速。
chē kāi shǐ jiā sù。
The car started to speed up.
我们要加速前进。
wǒ men yào jiā sù qián jìn。
We need to speed up and move forward.
加速能节省时间。
jiā sù néng jié shěng shí jiān。
Speeding up can save time.
他加速跑向门口。
tā jiā sù pǎo xiàng mén kǒu。
He sped up and ran toward the door.
请加速完成。
qǐng jiā sù wán chéng。
Please speed up the completion.
5 mini stories
司机看到红灯后没有加速。
sī jī kàn dào hóng dēng hòu méi yǒu jiā sù。
The driver did not speed up after seeing the red light.
老师说，做题时要先理解，再加速。
lǎo shī shuō， zuò tí shí yào xiān lǐ jiě， zài jiā sù。
The teacher said to understand first, then speed up when doing questions.
飞机开始加速起飞。
fēi jī kāi shǐ jiā sù qǐ fēi。
The plane began to speed up for takeoff.
他们希望加速完成任务。
tā men xī wàng jiā sù wán chéng rèn wu。
They hoped to speed up the completion of the task.
加速不是乱跑，而是更有效。
jiā sù bú shì luàn pǎo， ér shì gèng yǒu xiào。
Speeding up is not running wildly, but being more efficient.
Mini dialogue
跑步比赛
A
快到终点了，我要加速了！
Kuài dào zhōngdiǎn le, wǒ yào jiāsù le!
Almost at the finish line. I'm going to accelerate!
B
加油！你可以的！
Jiāyóu! Nǐ kěyǐ de!
Go for it! You can do it!
骑自行车
A
下坡的时候，自行车会自动加速。
Xià pō de shíhou, zìxíngchē huì zìdòng jiāsù.
When going downhill, the bicycle will accelerate automatically.
B
是的，所以要握紧刹车，注意安全。
Shì de, suǒyǐ yào wòjǐn shāchē, zhùyì ānquán.
Yes, so you need to hold the brakes tightly and be safe.
Related words and contrasts
opposite
减速
jiǎn sù
to slow down
Opposite action of accelerating.
similar
加快
jiā kuài
to speed up
Similar meaning, often used interchangeably.
related
速度
sù dù
speed
Related noun form.