One hand operation, takes less than 20 seconds.

单手操作，整个工作只需不到20秒。

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The hand operation is a simple, easy to learn, to lessen and eradicate the symptoms.

手法操作简单，便于掌握，能达到缓解和消除症状的作用。

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Safety well-designed, hand operation, with emergency stop button and jog up and down function.

安全设计，采用双手操作，设有紧急停止按钮及上下点动功能。

youdao

Mr Nadey Hakim, a surgeon at St Mary's Hospital in London who has taken part in a hand transplant operation in France, said any patient who undergoes the procedure would experience rejection.

BBC: Hand transplant 'a success'

Sullivan said he had to lie on top of Bradley and, though right-handed, had to use his left hand for the operation.

CNN: McVeigh jury hears gory testaments of life, death

As well as being a first for the UK, it was also the first time a recipient's hand has been amputated during an operation to attach a donor hand.

BBC: UK's first hand transplant operation