Junk DNA may serve other, unknown purposes.
垃圾dna或许起其它作用，未知名的意图。
The survey the scientists have made of 258 people shows that 83% of the people study for careers. But only 5% of them study for the sake of interests. The rest are studying for unknown purposes.
科学家对258人所作的调查表明，83%的人为职业需求所学习，只有5%为兴趣而学习，其余的人学习的目的不明。
The true scale of informal lending nationwide, much of it derived from bank loans originally intended for other purposes, is unknown.
这些民间借贷大部分来源于初始目的不明的银行贷款，其在全国范围内的真正规模尚不得而知。
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