Examples
dāng当nín您kāi chē开车de的shí hou时候，yīng gāi应该zài在zhuǎn wān转弯chù处jiǎn sù减速。
当您开车的时候，应该在转弯处减速。
When you are driving, you should slow down on corners.
火车在快到交叉路口的时候减速、按喇叭。
The train slowed and blared its horn as it approached the railway crossing.
注意，减速，距离200米处有个险弯。
Attention. Slow down. Dangerous turn at 200 meters.