This is the main type of treatment for HIV or AIDS.

这是艾滋病病毒或者艾滋病的主要疗法。

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In both of the above scenarios, text is the main type of unstructured data.

在这两个场景中，非结构化数据的主要类型是文本。

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The other main type of processor architecture, CISC (the x86 processor being a popular CISC instruction set), allows for memory access in nearly every instruction.

另外一种主要的处理器体系结构CISC (x86处理器就是一种流行的CISC指令集)几乎允许在每条指令中进行内存访问。

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In some countries in sub-Saharan Africa, traditional apprenticeships are the main type of skills training for those not formally employed.

UNESCO: One third of young people in Sub-Saharan Africa fail to complete primary school and lack skills for work | United Nations Educational, Scientific and Cultural Organization

They are faced with increasingly difficult physical circumstances: the food web is thinning out, many animals and plants have gone missing, their main food source a type of primitive grass is threatened, and they have to be on the lookout constantly for hostile animals, other less-evolved dinosaurs with more violent survival strategies.

FORBES: Prototyping The Distant Future

The main reason you cannot tell comes from the type of HDTVs that are on the market these days.

ENGADGET: Ask HDBeat: How can I tell the difference between 1080i and 1080p