當我在你這個年紀時，冥王星是行星。

When I was your age, Pluto was a planet.

Source: Tatoeba

Sentence Composition

=1 當 dāng
  1. to be
  2. to act as
  3. manage
  4. withstand
  5. when
  6. during
  7. ought
  8. should
  9. match equally
  10. equal
  11. same
  12. obstruct
  13. just at (a time or place)
  14. on the spot
  15. right
  16. just at
=1 當 dàng
  1. at or in the very same...
  2. suitable
  3. adequate
  4. fitting
  5. proper
  6. to replace
  7. to regard as
  8. to think
  9. to pawn
  10. (coll.) to fail (a student)
2 我 wǒ
  1. I
  2. me
  3. my
3 在 zài
  1. to exist; to be alive
  2. (of sb or sth) to be (located) at
  3. (used before a verb to indicate an action in progress)
=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 這個 zhège
  1. (pronoun) this
  2. (adjective) this
6 年紀 niánjì age

classifiers: 把, 個
=7 時 Shí surname Shi
=7 時 shí
  1. o'clock
  2. time
  3. when
  4. hour
  5. season
  6. period
8 冥王星 Míngwángxīng Pluto (dwarf planet)
=9 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)
=9 是 shì variant of 是 shì
10 行星 xíngxīng planet

classifier: 顆