although scientific proof
尽管有科学证据
以上为机器翻译结果，长、整句建议使用 人工翻译 。
In Vietnam many believe that ground rhino horn can be used to cure cancer - although there is no scientific proof of this - and horns taken to the the Middle East are used to make handles for ornamental daggers.
BBC: South Africa record for rhino poaching deaths
And although we've known that for years, this is the first big scientific proof of that relationship.
CNN: Simple test may determine smokers' lung cancer risk
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