by the age of

Of the 270 offspring, 27 % admitted with a diagnosis of schizophrenia by the age of 52.

在他们的270个子女中, 有27%在52岁之前因被诊断为精神分裂症而曾经接受住院治疗.

In the other tests, poorer results were shown by the age of 42.

在其它几项测试中，调查对象的得分在42岁时开始降低。

By the age of 6, he had covered hundreds of sheets of paper with his drawings.

到了六岁, 他已画了几百张纸的画稿.

By the age of seventeen, she had won her first world title and never looked back.

十七岁时就赢得了第一个世界冠军头衔并一发不可收。

By the age of six most children develop clear articulation.

到6岁时，大部分孩子都发音清晰了。

Based on the theory of equivalent age and with the help of APDL offered by ANSYS software, the research on thermal creep stress calculation of early-age concrete considering temperature effect on the modulus and creep is carried out.

基于等效龄期理论，借助于ANSYS软件提供的APDL语言，进行考虑温度影响效应的混凝土早期徐变应力场计算方法的研究。

By the age of 16, his dream was to play basketball professionally in the NBA.

他16岁时的梦想是到NBA打 职业篮球赛.

The incidence of cervical disease was related with age factors, increasing by the age.2.There was no significant difference between the two sides of the width of the spinalis muscles and semispinalis muscles in cervical spondylosis patients, 3.

结论：1.颈椎病的发病与年龄因素有关，随年龄增大而发病率增高。2.颈椎病患者双侧颈半棘肌、颈棘肌肌腹宽度的比较，无显著性差异。

He left home, married and had a son all by the age of 18.

他在18岁这一年内离开了家，同年结婚生子。

By the age of sixteen he was the junior lightweight champion of Poland.

16岁时他已经是波兰的青少年组轻量级冠军。

By analyzing the characteristics of dominant height growth, the results were as follows: index class was 7, baseline age was 6 years, the interval of site index class was 2 m, the interval of age gradation was 1 year.

在分析优势高生长过程的基础上，参照前人的分析结果，确定基准年龄为6a，立地指数级距为2m，立地指数等级为7级，龄阶距为1a。

By the age of seventeen I was a full-fledged atheist.

到十七岁时,我已经完全成为一名无神论者.

By the age of three babies will be well on their way to communicative competence.

三岁时孩子们就开始发展交流能力了.

By the age of two most children have begun to communicate verbally.

大多数孩子两岁时就开始用说话沟通.

In some sports you're past it by the age of 25.

在某些运动中，人过25岁就难有作为了。

Up until by the age of 12

到十二岁的时候

The cumulative rate curves of problem eating behavior increased by the age of 3 years.

有问题饮食行为的比率累积曲线,在三岁以前向上增加.

By the age of 16, however, Savant's precocious schoolgirl was no more.

然而,到16岁时, 莎凡特不再是早熟的女生了.

BY THE AGE of seven I was used to being top of my class.

我七岁的时候，已经常常是班上的第一名。

By the age of 14, he'd started his own design company.

14岁时，他成立了自己的设计公司。

By the age of sixteen he was the junior lightweight champion of Poland

16岁时他已经是波兰的青少年组轻量级冠军。

The equivalent age corresponding to the scores of the VMI test norm established for the 566 healthy deaf children was lower by an average of ( 1.79 ± 0.9) years than the equivalent age in the norms of the normal children in Shaanxi Province delayed and USA.

566例聋童的视觉-运动整合发育测验结果建成年龄等值常模表后与陕西省和美国正常儿童相比，每一原始分对应的年龄等值平均相差（1.79±0.9），普遍落后于正常儿童。

By the age of 21 he controlled the company.

他21岁就掌管了公司。

By the age of 40, Beethoven was completely deaf.

贝多芬在四十岁时全聋.

The age of stalagmite was determined by high precise thermal ionization mass spectrometry ( TIMS) with uranium series age method. Uranium content and age of the standard carbonate were in agreement with standard values.

用高精度热电离质谱（TIMS）铀系法测定碳酸盐标样的年龄，测定结果与α谱仪铀系法进行比较，铀含量和年龄值均吻合。

By the age of 25 she was completely burned out and retired from the sport.

她到25岁时就已体力耗尽，退出了体坛。

By the age of seven he could write beautifully.

他七岁时字就写得很漂亮了.

will have spent 10000 hours playing online games by the age of 21.

在其21岁前，平均每人花费在网络游戏上的时间可达10000小时

He had become an Olympic champion by the age of twenty.

他二十岁就已经是世界冠军了。

By the age of 70, he understood the play of the real world.

年届七十, 他才读懂了现实世界的行动准则.