For some time after his dangerous operation, Keren's life hang by a thread.
在手术后的一段时间，凯伦的生命都处于垂危之中。
Besides, an expensive operation only prolongs its life for a short time.
除此之外，昂贵的手术医疗费，仅可以维持牠的生命非常之短暂。
Besides, an expensive operation only prolongs its life for a short time.
除此之外，昂贵的手术医疗费，仅可以维持牠的生命非常之短暂。
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