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1.DNA that contained variants which helped them stay slim and fewer variants linked to being overweight.
variant 变种；变异体
The quagga was a strikingly beautiful variant of the zebra.
白氏斑马是一种极其美丽的斑马变种。
2.Over 30 per cent of American adults are obese, while a staggering 94.5 per cent of adults on the South Pacific island of Nauru are overweight.
staggering 令人震惊的
...a staggering $900 million in short- and long-term debt.
…令人震惊的9亿美元的短长期债务。
