Many crops were developed during the agricultural revolution when human societies made the transition from nomadic hunter-gatherers to horticulture and agriculture.
许多农作物的种植都是在农业革命期间发展起来的，当时人类社会正从游牧生活的狩猎和采集活动向园艺和农业过渡。
"We know, without a shadow of a doubt, when human life begins," he says.
“我们明确地知道，人的生命从何时开始，”他说。
Scientists found that when human stem cells are exposed to adenovirus-36, they turn into fat cells.
科学家发现当人类干细胞感染了腺病毒- 36，它们就变成脂肪细胞。
Since the time when human beings were born on this earth, change has been a constant factor in life.
自人类在地球上诞生，变化更替一直是生命中不变的因素。
There was no family when human beings split up from the animal world.
当人类从动物分化出来之初，并无家庭。
Why would he do what he has done, when human logic dictates otherwise?
他为何如此行呢？为何与人的逻辑背道而驰呢？
Urbanization is an inevitable trend when human beings enter into industrial society.
城市化是人类社会进入工业社会后的必然趋势。
There were even some complaints when human characters took up more screen time than the dishes.
当然，当影片过多地刻画人物而不是介绍美食时，也会引起观众的抱怨。
He traces it back to when human ancestors left their nests in the trees for sleeping on the ground.
他将这一变化追溯到人类祖先离开树巢开始睡在地上的时候。
It shows that a paradox of continuity and discontinuity emerges when human perception reflects to the outside world.
这是知觉在反映外部世界的过程中出现的连续与间断的矛盾。
Moreover, in the modern age when human beings depend so much on machines, he had given men throughout the world new pride.
此外，在当今这个人类如此依赖机器的时代，他赋予了全世界的人们以新的自豪感。
Moreover, in the modern age when human beings depends so much on machines, he had given men throughout the world new pride.
此外，在当今这个人类如此依赖机器的时代，他赋予了全世界的人们以新的自豪感。
You may have learned lots of theory in the classroom, but it tends to change drastically when human behavior gets involved.
你可能在学校学了一大套理论，但是涉及到人类行为时，它会发生戏剧性地变化。
Objective to study pointing movement characteristics and ergonomics when human upper limb touches different targets on the front board.
目的研究人体上肢对前方平面不同区域目标点的拾取运动特性和工效。
What you wear is how you present yourself to the world, especially today, when human contacts are so quick. Fashion is instant language.
一个人的穿着打扮，就是把自己呈现给世界的方式，尤其是在这个人际交流如此短暂的时代，时尚就是一种快速表达的语言。
What you wear is how you present yourself to the world, especially today, when human contacts are so quick. Fashion is instant language.
你的穿着就是你如何向世界展示自己，尤其如今，当人们的交流短暂快速，时尚就是立即的语言。
Meanwhile, the external surface of the limb joint protector is soft and flexible, and the collided part can not be hurt when human bodies collide.
同时这种肢体关节护具的外表面也是柔软有弹性的，在人体发生碰撞时不会伤害到受碰撞的另一方。
Zhuangzi's focus of attention is that only when human beings go spiritually beyond reality and back to the natural world can they achieve freedom and safety.
庄子所关注的核心问题是：人只有以其通达的精神来超越现实世界，回归绝对的自然世界，才能获得无限的自由和心灵的真正的平安。
The entire optical fiber connector has good tensile resistance and bearing resistance; even when human trampling or mouse biting, the optical fiber does not break, either.
整个光纤活动连接器能有效抗拉及耐压，在人踩踏及鼠咬时光纤也不会断裂。
The present turn of the century, therefore, is a pivotal period when human society transforms from the "industrial economy" into the third phase-the "knowledge-based" economy.
因此，当今这个跨世纪的年代，也正是人类社会从“工业经济”阶段转入“知识经济”这第三阶段的关键年代。
Or is the story actually about machinery and what happens to human relationships when human relationships become dependent upon machines, particularly in the way of communication?
或者，是否这个故事除了跟机器有关之外，还提到当人际关系被机器左右时所产生的后果，特别是沟通方式的问题？
Since January 2004, when human cases of H5N1 avian influenza were first reported in the current outbreak, 97 cases and 53 deaths have been reported in Viet Nam, Thailand and Cambodia.
2004年1月第一次报告了目前暴发中的H5N1禽流感人间病例，自那时以来，越南、泰国和柬埔寨报告了97例病例和53例死亡。
Results show that there exists a high level impulse output area, called the "fuzzy extreme value", around the extreme impulse output value when human muscle is trained with different load.
研究结果表明：人体用不同载荷完成力量训练动作时，在输出冲量极点周围存在一个具有较高输出冲量水平的区域，称之为“模糊极点”。
The results tally closely with those obtained when human volunteers were asked to assess audibility in test environments (Journal of the Acoustical Society of America, DOI: 10.1121/1.3268612).
测出结果完全与志愿者在实际试验环境中用人耳听出的评价相符。
They also knew that the sea level had basically stabilized, like the rest of the climate, over the past several thousand years, the period when human civilization arose and spread across the earth.
他们也知道，在过去几千年中，海平面就像其他气候元素一样，基本趋于稳定。人类文明在这期间崛起，蔓延到地球各处。
When human cases become transmissible from human to human, a flu epidemic begins.
当出现人与人之间可以相互传播的案例时，流感大流行就开始了。
When human cases become transmissible from human to human, a flu epidemic begins.
当出现人与人之间可以相互传播的案例时，流感大流行就开始了。
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