Creatures that live in the dark may lose their sight over evolutionary time.

凯伦·霍普金报道。 生活在黑暗环境下的生物可能在演化过程中视力逐渐下降。

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Creatures that live in the dark may lose their sight over evolutionary time. They may even lose their eyes entirely.

在黑暗中生活的动物可能会在进化过程中失去视力，甚至可能一点东西都看不见。

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Many people postpone to tomorrow the things they have to do simply because they lose sight of all their activities.

但却有许多人把必须要做的事推到明天因为他们对他们所有的活动都不在乎。

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"My position is that while I would welcome the G-20 leaders to formulate their national stimulus packages, they should never lose sight of the challenges and pride of developing countries, particularly the most vulnerable poor countries,"

VOA: standard.2009.03.25

Young people with juvenile idiopathic arthritis can lose their sight after developing uveitis (eye inflammation).

BBC: Bristol doctor leads trial for child arthritis drug

Patients with wet AMD can lose their sight within just three to five months of being diagnosed with the condition.

BBC: NHS delays 'causing blindness'

Far too many investors become obsessed with what their neighbors, friends, or highly visible benchmarks are doing, and so tend to lose sight of their own big picture.

FORBES: The Five W's Of Bad Investing Behavior