過馬路的時候, 你必須小心車輛。

In crossing the street, you must watch out for cars.

Source: Tatoeba

Sentence Composition

1 過馬路 guòmǎlù to cross the street
=2 的 de
  1. of; ~'s (possessive particle)
  2. (used after an attribute when it modifies a noun)
  3. (used at the end of a declarative sentence for emphasis)
  4. (used after a noun, verb or adjective to form a nominal expression, as in 皮革的 pígéde "one made of leather" or 跑堂兒的 pǎotángrde "a waiter (literally, one who runs back and forth in a restaurant)" or 新的 xīnde "new one")
  5. also pr. dì or di in poetry and songs
=2 的 dī a taxi; a cab (abbr. for 的士 dīshì)
=2 的 dí really and truly
=2 的 dì (bound form) bull's-eye; target
3 時候 shíhou
  1. time
  2. length of time
  3. moment
  4. period
=4 你 nǐ you (informal, as opposed to courteous 您 nín)
=4 你 nǐ you (Note: In Taiwan, 妳 is used to address females, but in mainland China, it is not commonly used. Instead, 你 is used to address both males and females.)
5 必須 bìxū
  1. to have to
  2. must
  3. compulsory
  4. necessarily
6 小心 xiǎoxīn
  1. to be careful
  2. to take care
7 車輛 chēliàng vehicle