直到会议结束之前都没人注意到她不在。

Nobody noticed that she was absent until the end of the meeting.

Her absence went unnoticed until the end of the meeting.

No one noticed her absence until the end of the meeting.

Nobody noticed that she was absent until the meeting ended.

No one noticed her absence until the meeting ended.

Source: Tatoeba

Sentence Composition

1 直到 zhídào until
2 会议 huìyì
  1. meeting
  2. conference

classifiers: 場, 屆
3 结束 jiéshù
  1. termination
  2. to finish
  3. to end
  4. to conclude
  5. to close
4 之前 zhīqián
  1. before
  2. prior to
  3. ago
  4. previously
  5. beforehand
=5 都 Dū surname Du
=5 都 dōu
  1. all; both; entirely
  2. (used for emphasis) even
  3. already
  4. (not) at all
=5 都 dū
  1. capital city
  2. metropolis
=6 没 méi (negative prefix for verbs) have not; not
=6 没 mò
  1. drowned
  2. to end
  3. to die
  4. to inundate
7 人 rén person; people

classifiers: 個, 位
8 注意 zhùyì to take note of; to pay attention to
9 到 dào
  1. to reach; to arrive
  2. to leave for; to go to
  3. to (a place); until (a time); up to (a point)
  4. (verb complement indicating arriving at a place or reaching a point)
  5. considerate; thoughtful; thorough
10 她 tā she
11 不在 bùzài
  1. not to be present
  2. to be out
  3. (euphemism) to pass away
  4. to be deceased