第一时间

第一時間
dì-yīshíjiān
  1. (idiomatic) immediately; at once; right away
  2. immediately; at once; right away

Wiktionary

Homographs

第一时间 dìyīshíjiān
  1. in the first moments (of sth happening)
  2. immediately (after an event)
  3. first thing

Examples

决定好的话请第一时间告诉我。

Please let me know as soon as it's decided.

Source: Tatoeba

Entry Composition

=1 第一 dìyī
  1. first
  2. most important; primary; foremost
=1 第一 dì-yī
  1. (literally, figuratively) first; 1st
  2. being the most important consideration; being essential, or a priority; coming first
  3. first; 1st
  4. firstly
  5. number one; #1; first (in a test, competition, etc.)
2 时间 shíjiān
  1. (concept of) time
  2. (duration of) time
  3. (point in) time