學習時努力是不可或缺的。

Effort is essential to studying.

Source: Tatoeba

Sentence Composition

1 學習 xuéxí
  1. to learn
  2. to study
=2 時 Shí surname Shi
=2 時 shí
  1. o'clock
  2. time
  3. when
  4. hour
  5. season
  6. period
3 努力 nǔlì
  1. to make an effort; to try hard; to strive
  2. hard-working; conscientious
=4 是 shì
  1. to be (followed by substantives only)
  2. correct; right; true
  3. (respectful acknowledgement of a command) very well
  4. (adverb for emphatic assertion)
=4 是 shì variant of 是 shì
5 不可或缺 bùkěhuòquē
  1. necessary
  2. must have
=6 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 跑堂儿的 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
=6 的 dī a taxi; a cab (abbr. for 的士 dīshì)
=6 的 dí really and truly
=6 的 dì (bound form) bull's-eye; target