当它运转了，他们才看起来放心了。

They looked relieved only when it was in motion.

Source: Tatoeba

Sentence Composition

=1 当 dāng
  1. (onom.) dong
  2. ding dong (bell)
=1 当 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 当 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 它 tā it
=2 它 tā it (pronoun for an animal)
=2 它 tuō
  1. alternative form of 駝 /驼 (tuó)
  2. used in 它它藉藉／它它借借
=2 它 yí only used in 它它
3 运转 yùnzhuǎn
  1. to work
  2. to operate
  3. to revolve
  4. to turn around
=4 了 le
  1. (completed action marker)
  2. (modal particle indicating change of state, situation now)
  3. (modal particle intensifying preceding clause)
=4 了 liǎo
  1. to finish
  2. (used with 得 dé or 不 bù after a verb to express (im)possibility, as in 忘不了 wàngbuliǎo "cannot forget")
  3. (literary) (usually followed by a negative such as 無 wú or 不 bù) completely (not); entirely (not); (not) in the least
  4. to understand clearly (variant of 瞭 liǎo)
=4 了 liǎo
  1. (of eyes) bright
  2. clear-sighted
  3. to understand clearly
=4 了 liào unofficial variant of 瞭 liào
5 他们 tāmen they; them
=6 才 cái
  1. ability; talent
  2. sb of a certain type
  3. a capable individual
  4. then and only then
  5. just now
  6. (before an expression of quantity) only
=6 才 cái
  1. (variant of 才 cái) just now
  2. (variant of 才 cái) (before an expression of quantity) only
=7 看起来 kànqǐlai seemingly; apparently; looks as if; appears to be; gives the impression that; seems on the face of it to be
=7 看起来 kànqilai
  1. to look and perceive
  2. to seem; to look as if
8 放心 fàngxīn
  1. to feel relieved
  2. to feel reassured
  3. to be at ease
=9 了 le
  1. (completed action marker)
  2. (modal particle indicating change of state, situation now)
  3. (modal particle intensifying preceding clause)
=9 了 liǎo
  1. to finish
  2. (used with 得 dé or 不 bù after a verb to express (im)possibility, as in 忘不了 wàngbuliǎo "cannot forget")
  3. (literary) (usually followed by a negative such as 無 wú or 不 bù) completely (not); entirely (not); (not) in the least
  4. to understand clearly (variant of 瞭 liǎo)
=9 了 liǎo
  1. (of eyes) bright
  2. clear-sighted
  3. to understand clearly
=9 了 liào unofficial variant of 瞭 liào