I was in the middle of an operation that lasted six hours.
我在持续了六个小时的手术台中间。
For several hours after the operation the patient was lethargic because of the anesthetic.
手术后几小时，病人因麻醉剂的作用而昏睡着。
Low cost of ownership with an excellent product life, exceeding 50,000 hours in operation.
拥有成本低的产品与优秀的生命，超过50,000小时运作。
Low cost of ownership with an excellent product life, exceeding 50,000 hours in operation.
拥有成本低的产品与优秀的生命，超过50,000小时运作。
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