The person performing the piercing disposes of the needle in a special container so that there is no risk of the needle or blood touching someone else.
穿刺后手术针被穿刺者妥善放入特殊容器中，以免他人被刺到或沾染血液的危险
2
A small vial or container with a little water in it is one way of showing how much blood will be withdrawn.
一个小瓶子或装上少量水的容器是一种显示多少血将被抽的方法。
3
Marx et al have described this process. One hundred and fifty milliliters of whole blood is drawn into a citrated container.