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1·Now, Let's give the floor to sb who has a distinguished reputation in this field.

现在，让我们请在这个领域享有盛誉的某某先生上台发言。

2·Must consider to have cautiously before the decision that makes give sb a shot in the arm get used to card without what make clear, balance its advantages and disadvantages.

在作出输血的决定之前须慎重考虑有无明确的适应证，权衡其利弊。