你咳嗽、打喷嚏或打哈欠的时候要捂住你的嘴。

Cover your mouth when you cough, sneeze, or yawn.

Source: Tatoeba

Sentence Composition

=1 you (informal, as opposed to courteous nín)
=1 you (Note: In Taiwan, is used to address females, but in mainland China, it is not commonly used. Instead, is used to address both males and females.)
2 咳嗽 sou to cough

classifier:

3 打喷嚏 pēn to sneeze
=4 huò
  1. maybe
  2. perhaps
  3. might
  4. possibly
  5. or
=4
  1. Original form of (guó, “country”).
  2. Original form of (yù, “range; territory”).
5 打哈欠 qian to yawn
=6 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 de "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. or di in poetry and songs
=6 a taxi; a cab (abbr. for 的士 shì)
=6 really and truly
=6 (bound form) bull's-eye; target
7 时候 shíhou
  1. time
  2. length of time
  3. moment
  4. period
=8 yāo (bound form) to demand; to coerce
=8 yào
  1. to want; to need; to ask for
  2. will; shall; about to
  3. need to; should
  4. if (same as 要是 yàoshi)
  5. (bound form) important
=8 yǎo
  1. (archaic) alternative form of (yǎo)
  2. alternative form of (yǎo)
  3. used in 要褭要袅
9 捂住 zhù to cover (typically by placing a hand over sb's mouth, nose or ears etc)
=10 you (informal, as opposed to courteous nín)
=10 you (Note: In Taiwan, is used to address females, but in mainland China, it is not commonly used. Instead, is used to address both males and females.)
=11 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 de "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. or di in poetry and songs
=11 a taxi; a cab (abbr. for 的士 shì)
=11 really and truly
=11 (bound form) bull's-eye; target
12 zuǐ
  1. mouth
  2. beak
  3. nozzle
  4. spout (of teapot etc)

classifiers: ,