进入地球大气层后，小行星分裂成了无数的小块。

The asteroid broke up into small pieces as it entered Earth's atmosphere.

Source: Tatoeba

Sentence Composition

1 进入 jìnrù
  1. to enter
  2. to join
  3. to go into
=2 地球 dìqiú the earth
=2 地球 Dìqiú
  1. (astronomy) the Earth
  2. the Earth
3 大气层 dàqìcéng (meteorology) the atmosphere; atmospheric layer
=4 后 Hòu surname Hou
=4 后 hòu
  1. empress
  2. queen
  3. (archaic) monarch
  4. ruler
=4 后 hòu
  1. back
  2. behind
  3. rear
  4. afterwards
  5. after
  6. later
  7. post-
5 小行星 xiǎoxíngxīng
  1. asteroid
  2. minor planet
6 分裂 fēnliè
  1. to split up
  2. to divide
  3. to break up
  4. fission
  5. schism
7 成了 chéngle
  1. to be done
  2. to be ready
  3. that's enough!
  4. that will do!
8 无数 wúshù
  1. countless
  2. numberless
  3. innumerable
=9 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
=9 的 dī a taxi; a cab (abbr. for 的士 dīshì)
=9 的 dí really and truly
=9 的 dì (bound form) bull's-eye; target
10 小 xiǎo
  1. small
  2. tiny
  3. few
  4. young
11 块 kuài
  1. lump; chunk; piece
  2. classifier for pieces of cloth, cake, soap etc
  3. (coll.) classifier for money and currency units