现在科学家说，他们已经发现了保持亲密的诀窍—但这对于男人和女人来说似乎是不同的。
Now scientists say they have uncovered the key to staying close and it appears to be different for men and women.
“我们一直有如何处理它们的问题。”科学家杨说，“现在，我们可以把它们变成漂亮的材料。”
"We always have a problem of how to deal with them," Yang, a scientist says, "Now, we can turn them into beautiful materials."
现在来自美国、英国和德国的科学家说他们已经证实了该推论。
The scientists - from the US, UK and Germany - now say they have proved the case.
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