1.
Users who inject the drug are also in more danger if they share needles with other users.
注射毒品的人如果和其他吸毒者共用针头，他们就更危险了。
2.
Needle-sharing is a problem of the drug-taking community. It is the second largest killer.
共用针头是吸毒者当中的一个问题，是第二大杀手。
3.
Chances of acquiring small quantities of blood will increase by sharing needles. This is the one method by which blood is transferred directly from one individual to another.
共用针头造成吸收少量残留血液的机会增大，这是血液从一个人直接进入另一个人的一种方式。
4.
2.Sharing or reusing contaminated needles;
2.共用或重复使用已经被感染的针头；
5.
Another was through sharing the needles used to take illegal drugs.
另一种是通过共用注射毒品的针头传播。
6.
regulator head (for two-piece regulator)
快慢针头(对开快慢针用)
7.
Pins: satin steel pins recommended.
大头针：推荐使用光滑的钢制大头针。
8.
It can spread between people through sex or by sharing infected needles or other sharp devices.
它可以通过性交、共用被感染过的针头或其他利器相互传染。
9.
attach or fasten with pins.
用大头针别上或固定。
10.
prick holes in paper with a pin
用大头针在纸上穿孔.
11.
Ballpoint needles are used to sew fine knits tricots.
圆头针用来缝制高档针织精编织物。
12.
Having a grain suggestive of the heads of pins.Used of leather.
具有针头似小点的用于皮革，指有针头似小点的
13.
The probable reasons for breakage in this case were usage of a small(30- gauge) needle and improper bending of the needle.
发生断针原因可能是使用较小的针头及不当弯曲针头所造成。
14.
contaminated syringes used by drug abusers, blood transfusions involving tainted blood, mother-to-fetus transmission,
但吸毒者共用不洁的针头，输血的来源不干净，母亲对胎儿的垂直感染，
15.
lensless photography = pinhole photography
针孔摄影﹝利用针孔代替镜头的摄影方法﹞
16.
double-head arrow
双箭头(双头指针)
17.
Double-headed arrows are used to indicate resonance.
双箭头用来表示共振。
18.
and cracked his head soundly with her thimble.
还用顶针狠狠地敲他头，敲得砰砰响。