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。
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。
To me, a feast of love is any instant (or hour or lifetime) when human beings exchange affection.
对我而言一份爱的大餐是当人类交换感情的一瞬间(一个小时或一生)。
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。
But she had a very keen scent, as wild animal shave, and could easily discover when human beings were near.
但是她有着非常敏锐的感觉，就像野生动物一样锋利，可以在有人靠近的时候非常容易的发现。
When human cases of H5N1 are identified, coordinated human and animal health investigations will be essential.
当H5N1型禽流感人类病例得到确认时，必须开展协调一致的人类和动物卫生调查。
Even when Human Resources finds candidates, screening experience is more limited than with other disciplines.
即使人力资源部门找到了候选者，针对经验进行的筛选也比其他门类更为严格。
To improve customer service when human translation cannot meet the demands of content volume or rate of change.
当人工翻译不能满足内容的量以及变化率的要求时，可提高客户服务质量。
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 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。
When human society has come into an information age, people faced great stress brought by "information Explosion", "information Chaotic Space" and "Data Glut".
随着人类社会步入信息社会，人类面临“信息爆炸”、“混沌信息空间”和“数据过剩”带来的巨大压力。
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。
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。
He's really very human when you get to know him.
你若了解他，就知道他确实很有人情味。
When land gets developed for human use, the landscape changes.
当土地被开发为人类使用时，其地貌就会发生变化。
When it grows hot, heat can affect human health.
天气变热时，高温会影响人体健康。
When does having more cease to add noticeably to human satisfaction?
从什么时候起，拥有更多不再显著增加人类的满足感？
"When you're emotionally vulnerable, you're even more in need of a caring human being," he says.
他说：“当你情感脆弱时，你更需要一个体贴的人陪着。”
"When you' re emotionally vulnerable, you' re even more in need of a caring human being," he says.
他说：“当你情感脆弱时，你更需要一个体贴、有爱心的人在身旁。”
When experiments are to be made, one cannot rely too much upon the human senses to make an accurate observation.
做实验时，不能过分依靠人类的感官去做精确的观察。
This basic approach is limited in the range of numbers that it can express, but this range will generally suffice when dealing with the simpler aspects of human existence.
这一基本方法所能表达的数字范围有限，但在处理人类生存较简单的方面时，这一范围通常是足够的。
The psychological effects of all these extraordinary sounds can be profound, especially when they seem so disconnected from the human doing the drumming or chanting.
所有这些不同寻常的声音所产生的心理影响可能是深远的，尤其是当它们看起来与击鼓或诵经的人如此脱节的时候。
The psychological effects of all these extraordinary sounds can be profound, especially when they seem so disconnected from the human doing the drumming or chanting.
所有这些不同寻常的声音所产生的心理影响可能是深远的，尤其是当它们看起来与击鼓或诵经的人如此脱节的时候。
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