to challenge
to invite someone to compete or strongly suggest they should do something, often to test their abilities or encourage action
[动词]
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登录to trek
to go for a long walk or journey, particularly in the mountains, forests, etc. as an adventure
徒步旅行
[动词]
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登录to sponsor
to cover the costs of a project, TV or radio program, activity, etc., often in exchange for advertising
赞助
[动词]
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登录expedition
a trip that has been organized for a particular purpose such as a scientific or military one or for exploration
探险
[名词]
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登录to raise
to assemble money or resources, particularly in order to achieve or create something
筹集
[动词]
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