嗨,先生,黑板上的不是指数函数,而是三角函数。

Hey, sir, the function on the blackboard is not exponential, but trigonometric.

Source: Tatoeba

Sentence Composition

1 hāi
  1. oh alas
  2. hey!
  3. hi! (loanword)
  4. a high (natural or drug-induced) (loanword)
=2 先生 xiānsheng
  1. teacher
  2. gentleman; sir; mister (Mr.)
  3. husband
  4. (dialect) doctor

classifier:

=2 先生 xiānshēng
  1. (dialectal) traditional Chinese medicine physician
  2. (literal, Classical) one who was born earlier
  3. (literary) Taoist priest
  4. (literary) ancestor
  5. (literary) father and elder brother
  6. An honorific for adults, usually conferred on males: mister; sir; gentleman
  7. Taoist priest
  8. ancestor
  9. father and elder brother
  10. husband
  11. one who was born earlier
  12. traditional Chinese medicine physician
3 黑板 hēibǎn blackboard

classifiers: ,

=4 shǎng used in 上声 shǎngshēng
=4 shàng
  1. (bound form) up; upper; above; previous
  2. first (of multiple parts)
  3. to climb; to get onto; to go up
  4. to attend (class or university)
  5. (directional complement) up
  6. (noun suffix) on; above
=5 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 跑堂儿的 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
=5 a taxi; a cab (abbr. for 的士 shì)
=5 really and truly
=5 (bound form) bull's-eye; target
=6 不是 shì
  1. no
  2. is not
  3. not
=6 不是 shi fault; blame
7 指数函数 zhǐshùhánshù exponential function
8 而是 érshì rather
9 三角函数 sānjiǎohánshù trigonometric function