You would hae to anesthetize them to take blood samples.
你需要麻醉它們?nèi)⊙獦?
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Next, anesthetize the female by placing her in the same dedicated anesthetic container.
然后用同樣的方法把母魚放進同樣的麻醉池中,過程已經(jīng)在上面講的很詳細了.
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"The patient must be anesthetized before the operation"