... keep-alive circuit 维弧电路 ; 维生电路 ; keep-alive contact 维弧触点 Keep Hope Alive 让希望之树常青 ; 希望之心 ; 一希尚存 ...
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Some keep contact with their friends via Internet; some send letters and postcards, or even photos; others may just call and say hi, just to let their friends know that they're still alive and well.
有些人通过互联网跟朋友联络；有些人寄信、明信片，甚至照片；还有些人可能只是打个电话问声好，目的仅是让朋友们知道他们还活着，而且活得不错。
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