1. Puncture of a vein, as for drawing blood, intravenous feeding, or administration of medicine. 
   静脉穿刺对静脉的穿刺，如为抽血、静脉给食或施用药物
2. That a coat hanger, in a pinch, makes a good rack for an intravenous bag. 
   例如，必要时一个挂衣架就能当静脉输液支架用；
3. a blunt needle for pulling ribbon through loops. 
   可以通过线圈穿丝带的钝针。
4. She was given a needle for whooping cough. 
   她因患百日咳打了一针。
5. To look for a needle in a haystack. 
   大海捞针。

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