So write a letter, write down your new life expectation and dream, and put it away.

写一封信，记下你们对新生活的展望和梦想，并将它收藏起来。

Life expectation is measured by time. Life value is judged by contributions. (s. Petofi).

生命的多少用时间计算，生命的价值用贡献来计算。

This paper presents the calculation methods for life expectation of automotive leaf springs.

介绍了作者在产品设计中，多年来采用的汽车钢板弹簧设计寿命的计算方法。

Compared with the control, different concentrations of melamine significantly decreased the life expectation, net re - productive rate and generation time.

与对照组相比，不同浓度三聚氰氨都显著降低了轮虫的生命期望、净生殖率和世代时间。

The general health of the Benin population is poor: life expectation at birth is 47 years and 24% of children under the age of 5 suffer from undernutrition.

一般健康的贝宁人口是贫穷的：出生时预期寿命是47岁和24 ％的儿童5岁以下遭受营养不良。