It was done while the eyes were "in flight" to the next fixation, when the participants were virtually blind until they landed at the next spot.

当眼睛转向下一个焦点也就是当受试者专注下一点之前而出现视盲时，试验结束。

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In a single-blind tasting, the taster may know which brand or types of wine are in the flight, but not the order.

在单一盲品中，品尝者可能知道所品葡萄酒的品牌或类型，但却不知道顺序。

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Natalie Doig, campaigns officer for the Royal National Institute of Blind People, said current flight regulations did not specify that blind people needed to be accompanied.

BBC: Thomson Holidays refuses blind friends flights

This has been most obvious in public responses to the flight last month of a blind activist, Chen Guangcheng, to the American embassy in Beijing and his subsequent move to a Beijing hospital for treatment.

ECONOMIST: Nationalism online

Without the flight measurements, "we would be blind" to changes in the ice sheet, said the mission leader, Seelye Martin of the University of Washington in Seattle.

CNN: NASA flights will study Antarctic ice changes