The reader will still need access to comprehensive textbooks and journals for details of rare conditions, in-depth reviews, and more up-to-date information.
对于那些希望了解某些少见疾病的详细内容、进一步的回顾资料以及最新信息的读者，需要他们再去阅读一些综合教科书和期刊。
Nowadays, instances are not rare of farmers in China using computers to gather information via the Internet and conducting their agriculture operations by means of up-to-date machinery and expertise.
目前，不难见到，中国的农民们用计算机来通过互联网收集信息，并用最新的机械和专业知识来进行农业运作。
Up to date, the red light emitting materials used in organic electroluminescence, which are highly required in full color display, remain rare.
红色发光材料一直是有机电致发光中较为稀缺的材料，也是电致发光全色显示不可缺少的材料。
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