虽然说汞对人体神经系统有害，但1856年以来，汞齐就被用于修补人们的牙齿了。
The element mercury has been shown to damage the human nervous system. Yet, since 1856, mercury amalgam is "the" filling dentists have used to repair our teeth.
虽然说汞对人体神经系统有害，但1856年以来，汞齐就被用于修补人们的牙齿了。
The element mercury has been shown to damage the human nervous system. Yet, since 1856, mercury amalgam is “the” filling dentists have used to repair our teeth.
目的 ：观察异丙酚加眶下神经阻滞作唇裂修补术的临床麻醉效果。
Objective: To observe anesthetic effect of disoprofol combined with infraobital nerve blockade on cheiloschisis repairing operation.
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