重要的唐卡要绣在变幻的素描上；其中的一些使用各种各样的针法，如平针和叠针，使它们看起来有三维的视觉效果。
Important thangkas are embroidered on transferred Outlines; some of them use a great variety of stitch patterns such as flat and piled stitches to give them a three-dimensional effect.
在职业环境中受到感染的主要原因是皮肤上的伤口(如由针，医疗器械，或叮咬而造成的皮肤破损)接触了被HIV病毒污染的血液。
The main cause of infection in occupational Settings is exposure to HIV-infected blood via a percutaneous injury (i.e. from needles, instruments, bites which break the skin, etc.).
其中的一些使用各种各样的针法，如平针和叠针，使它们看起来有三维的视觉效果。
Some of them use a great variety of stitch patterns such as flat and piled stitches to give them a three-dimensional effect.
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