pretender

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No pretender is pan-regional enough, and only Africa’s linguistic situation may be sufficiently fluid to have its future choices influenced by outsiders.
泛区域性的替代者是没有影响的，而且只有非洲的语言境况会改变很快，因为它的未来被外界所左右。
Every expert has a story about a “blind” test in which several instruments are played out of sight and the listeners have to guess which is the Strad and which the modern pretender.
每一个专家都有一个关于蒙眼测试的故事。在蒙眼测试中，参加测试者不见乐器只闻其声，靠听力辨别哪是用斯特拉瓦迪演奏，哪是用现代小提琴演奏。
Presumably because she's a United fan and not because she has always wanted to be compared to Tom Kiefer of glam rock pretender Cinderella.
这么说吧，这是因为她是个曼联球迷，而和那些乱七八糟把他和灰姑娘比的那些一点关系都没有。

But,it's hard,if you're fourty-seven years, your job is a pretender to the throne, it's difficult.He had a hard time getting around.
但是,如果你要花四十七年,去争夺王位,是很不容易的,他做得很艰苦
耶鲁公开课 - 1871年后的法国课程节选
There was a pretender to the throne, and this man was--his life got off to an interesting start.
有一个觊觎王位的人,这个人的一生,有一个有趣的开始
耶鲁公开课 - 1871年后的法国课程节选

More than any past election, this one will be about leadership, pitting a young pretender against an old hand.
ECONOMIST: Why the campaign will count in a contest that matters
But these days most directors are not as willing to roll over for a chief executive, much less a pretender to the throne.
FORBES: Are dynasties Dying?

a person who states they have a right to the high position that someone else has, although other people disagree with this

A pretender to a position is someone who claims the right to that position, and whose claim is disputed by others.