1.  in advance
2.  beforehand
3.  before the event

• 1. 事前: Beforehand | before the event | Ex Ante
• 2. 事前审批: pre-implementation approval
• 3. 事前测试: before tests | pretesting

更多释义

• 1.做些事前筹划可防止多起事故的发生。
  With a little forethought many accidents could be avoided.
  dict.yoduao.com
• 2.我苦苦追忆着出事前见到的一切。
  I tried hard to recollect what I saw just before the accident.
  dict.yoduao.com
• 3.未来之事事前有预兆。
  Coming events cast their shadows before.
  dict.yoduao.com

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