He saved his daughter from the fire but at the cost of his own life.
他牺牲了生命，把女儿从大火中救出来。
He saved her from the fire, but at the cost of his own life.
他把她从火中救了出来，但是却付出了生命的代价。
The motorcycle cost him half of what he had saved.
他买摩托车用掉了节省下来的一半钱。
He saved her at the cost of his life.
他以生命为代价救了她。
She saved him from the fire but at the cost of her own life.
她从火中救了他，却付出了生命的代价。
Bill saved John at the cost of his own life.
比尔为救约翰付出了自己的生命。
Therefore the installation cost and time can be greatly saved.
节约安装费用，缩短安装周期。
Therefore the installation cost and time can be greatly saved.
节约安装费用，缩短安装周期。
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