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1.at home 在国内；在家里
The firm has identified 60 potential customers at home and abroad.
该公司已在国内外找到60个潜在客户。
2.invest in 投资于；在......投入
They had the foresight to invest in new technology.
他们拥有投资新技术的远见。
3.by the end of 到……为止；到……底为止
By the end of the holiday I had spent all my money.
到假期结束时，我已经花光了自己所有的钱。
4.fail to 未能；没有
Those who fail to register risk severe penalties.
那些没有注册的人可能会受到严厉的处罚。
