Reusing needles is unhygienic.

重复使用针头是不卫生的。

No, I know I should get them but needles make me so queasy!

没有。我知道我应该去接种，但是针头让我很不舒服！

The carpet of pine needles was soft underfoot.

松针铺成的地毯在脚下软软的。

Her mother counted the stitches on her knitting needles.

她的母亲数了数编织针上的针数。

The trees formed such a dense canopy that all beneath was a deep carpet of pine needles.

这些树形成了浓密的冠盖，下面是一层厚厚的松针。

I gave Kevin a course of acupuncture using six needles strategically placed on the scalp.

我给凯文进行了一个疗程的针灸治疗，把6支银针分别扎在头皮的关键穴位上。

By burning tree branches, pine needles, and pine cones, many not only warm their houses but improve the smell therein.

通过燃烧树枝、松针和松果，许多人不仅给屋子供暖，而且还改善里面的气味。