Expectation of life is the average Numbers of years that a person is expected to live. The expectancy of life is the prediction of average years a person can live.

估计寿命是预计一个人能活得平均年数。

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Almost 7,000 people in the UK are currently on the waiting list for a new kidney, and demand for the organs is expected to grow as the average life expectancy increases.

在英国，目前约有7,000人在肾脏器官移植申请中等待，并且，据估计器官的需要数量将随平均寿命的增长而增加。

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As a result, a 30-year Freddie Mac with a coupon of 5.5% has an expected weighted average life of seven years, as calculated by Bloomberg.

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