单词：universal set
universal set的用法和样例：
例句
- For a universal set, the set of all elements in the set that are not in a specified subset.补集对任意一个集合，这个集合的所有元素不共存在于它的任一子集合
单词：universal set 相关文章
The World Health Organization says about 500,000 people die every year from seasonal flu. To combat that, doctors recommend getting a flu vaccine at the beginning of each flu season and researchers are now working on a universal vaccine that could pr
VOA标准英语2010年(十二)月
The central government's chief liaison in Hong Kong has gone on record saying authorities on the mainland are sincere in achieving universal suffrage for Hong Kong. CRI's Su Yi has more. Zhang Xiaoming, director of the Liaison Office of the Chinese C
世界各地新闻集锦
Each year, scientists work to develop a unique influenza vaccine to protect people against the strain expected in the coming flu season. Mutations in the virus mean that last year's vaccine probably won't protect against this year's flu variety. Now,
VOA标准英语2010年(七)月
By Robert Raffaele Washington, DC 08 December 2006 watch Universal Studio Expansion Universal Studios' Bates motel It seems movie characters Norman Bates and his mother from the film Psycho will be getting some neighbors. As VOA's Robert Raffaele ex
2006年VOA标准英语（十二月）
Hong Kong is preparing for a crucial vote on election reform. The special administrative regions Legislative Council will debate a reform package that will give as many as five million people a more direct say in who will become the citys next chief
cctv9英语新闻2015年
China's Tibet Autonomous Region is about to achieve a universal coverage of fibre-optical broadband service ahead of its schedule. As China further rolled out its universal broadband project, Tibet's broadband service is looking to reach 98% of admin
2018CRI中国国际广播电台