插入导管前先要进行检查。
An examination is carried out before the insertion of the tube.
外科医生把导管插入靠近大脑底部附近的血管和动脉。
The surgeon placed catheters through the veins and arteries near the base of the head.
外科医生把导管插入靠近大脑底部附近的血管和动脉。
The surgeon placed catheters through the veins and arteries near the base of the head.
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