The duration of marriage is related most obviously to the expectation of life.
很明显，婚姻生活的持续时间与人的预期寿命有关。
Free life has been the expectation of the people for thousands of years.
风流倜傥、潇洒自在，千百年美满生活的期待。
You can see in her face that life was full of interest, expectation and occupation.
你可以在她脸上看到对她来说生活中充满兴趣，期望和事业。
But I still full of expectation high school life.
但我对高中生活还是充满着期待。
Therefore, it is necessary to offer the formula for the calculation of expectation-of-life.
所以给出平均余寿的计算式非常必要。
Therefore, it is necessary to offer the formula for the calculation of expectation-of-life.
所以给出平均余寿的计算式非常必要。
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