It is not, in principle, necessary for a biological system to age and die.
原则上来说，生物系统的衰老和死亡都不是必然的。
My research focus is on what happens to our immune system as we age.
我的研究重点是随着年龄的增长，我们的免疫系统会发生什么变化。
In the early 1990s, graduation from the compulsory education system occurred at age sixteen.
上世纪90年代初期，从义务教育体系中毕业的学生的年龄都在16岁。
That, then, is the age of the solar system.
那么这就是太阳系的年龄。
The age of the system is from the beginning of the cycle.
系统的年限从该周期的开始算起。
Conclusions: 1. The norm of the ZM2.1 diagnosis system should consider the age and education level.
结论：1、确定ZM2.1诊断系统各功能亚项常模时需考虑年龄、文化程度的影响。
The 21st century will be an age of individual product customization system driven by customers.
21世纪将是客户驱动的个性化产品定制时代。
No one other library system has such a wide readership age.
没有任何一个其他的图书馆系统具有这样广泛的读者年龄。
In this paper, a method for im-age-based individual face modeling generation system is presented.
论文建立了一个基于照片的个性化人脸建模通用系统。
The system of bone age assessment without film is put forward under this background.
本文所述无胶片化骨龄评价系统的研制，就是在此背景下提出的。
Your immune defense system gets depleted as you age.
你的年龄，你的免疫防御系统被耗尽。
Your immune defense system becomes depleted as you age.
你的免疫防御系统，会耗尽你的年龄。
It is the most common seen musculoskeletal system disease among seniors above age 50.
是50岁以上老人中最常见的骨骼肌肉系统疾病。
In this Information age, it becomes certain to use computer to manage accounting system.
随着信息社会的到来，使用计算机进行会计核算的管理成为历史的必然。
Visual system impairment in the pediatric age group is also discussed.
在儿科的年龄段方面的直观系统亏损也被讨论。
Visual system impairment in the pediatric age group is also discussed.
在儿科的年龄段方面的直观系统亏损也被讨论。
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