In 2001, Danish researchers conducted physical and cognitive tests on more than 1,800 pairs of twins over aged 70, as well as taking photos of their faces.

2001年，丹麦研究者对1800多对年过70的双胞胎进行了身体和认知测试，还拍了他们的脸部照片。

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The Purchaser shall bear all costs of taking-over tests. The Contractor shall, however, bear all costs relating to his personnel and his other representatives.

买方应承担验收测试的所有成本。而承包方应承担其自身人员和其它代表的所有费用。

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He shall in this notice give a date for taking-over tests, giving the Purchaser sufficient time to prepare for and be represented at these tests.

并在此通知中注明验收测试的时间，给予买方充足的时间进行准备和参与这些测试。

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Ashton said the defeat - his 10th in 21 Tests since taking over from Andy Robinson - had not affected his self-belief.

BBC: Ashton determined to make amends

He has been in charge for five Tests since taking over the reins from David Trist and has yet to taste defeat.

BBC: Aberhart's growing reputation

Johnson has had eight defeats in 14 Tests since taking over in 2008, including against Australia and New Zealand in the autumn Test series.

BBC: Martin Johnson rejects Dallaglio's remarks