1.  before
2.  previously

• 1. 以前: ago ad | Previous | at one time | before
• 2. 很久以前: long ago | once upon a time | long before | long since
• 3. 以前的: former | previous | past | gestrig

更多释义

• 1.他们会在天黑以前回来。
  They'll be back well before dark.
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• 2.他唱歌比以前悦耳多了。
  He sang much more sweetly than he has before.
  dict.yoduao.com
• 3.你以前干过这种工作吗？
  Do you have any previous experience of this type of work?
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