他看到针就晕倒了。

He fainted at the sight of the ___needle.

当针刺破他的皮肤时，病人畏缩了。

The patient winced as the ___needle pierced his skin.

医疗专业人员必须极其小心地处理每一根针，以防止事故。

Medical professionals must handle each ___needle with extreme care to prevent accidents.