research
a careful and systematic study of a subject to discover new facts or information about it
研究, 调查
[名词]
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a position or degree of value in a group that is ranked or classified based on a particular standard
等级, 级别
[名词]
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a portable device that combines the functions of a cell phone and a computer, such as browsing the internet, using apps, making calls, etc.
智能手机, 智慧手机
[名词]
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to create or choose a course of action from various options after considering the available information and potential consequences
[短语]
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