Many have assumed that humans ceased to evolve in the distant past, perhaps when people first learned to protect themselves against cold, famine and other harsh agents of natural selection.
很多人认为，在遥远的过去，人类通过了饥饿、寒冷等自然选择的严峻考验后，便不再进化了。
Selection of hot or cold forming of materials may be made by Vendor, but heat treatment after forming shall conform to the requirements of applicable material specifications.
材料的热成型或冷成型的选择由卖方进行，但成型后热处理应符合相关材料规范的要求。
Dhow Cafe offers a selection of teas and coffees, cold sandwiches, pastries, ice cream, and homemade desserts.
单桅帆船咖啡馆提供了一个选择的茶和咖啡，冷三明治，糕点，冰激凌，和自制的甜点。
Then we started porridge and four committee composed of three people, the selection committee, bargy, eating his porridge is cold.
然后大家开始组成三人的分粥委员会及四人的评选委员会，互相攻击扯皮下来，粥吃到嘴里全是凉的。
This commemorative stamp selection Shoushan stone stone cold puddles, stone jade, stone color Hongyan pleasant.
此枚印章选材寿山石的水坑冻石，石质如玉，石色红艳怡人。
The proper interpass temperature is required to prevent cold and hot cracking as well as the proper selection of welding filler material, to produce the proper creep resistance and toughness.
需要适当的程间温度和正确选择填充金属材料来防止冷热裂缝，产生适当的蠕变阻力和韧性。
By means of infrared technique, cold typal wheat can well be distinguished and the bases can be provided for the selection of parentage, line and variety.
利用红外技术可以较好地识别冷型小麦，并为株系、品系、品种的选择提供依据。
Was there a good selection of breakfast items available (i. e. fresh fruits, cereals, pastries, cold meats, egg dishes, local dishes, etc.)?
早餐内容的可选择性好吗(如：鲜水果，谷类食品，糕点，冷盘等)？
This paper describes the design and selection of important parameters of oxygen lance nozzle for 120 t converter, analyzes and discusses its applied results both in cold state test and production.
阐述了安钢120t转炉氧枪喷头重要参数的设计和选取，并通过冷态测试和实际运用对氧枪喷头的使用效果进行了分析和讨论。
This paper analyses the distribution modes selection of the food cold chain for 2008 Olympic Games with the method of fuzzy evaluation, and USES AHP to ensure the weight of the index.
通过选取了模糊综合评判法对2008年北京奥运会食品冷链配送模式选择进行分析，在综合评判法中采用了层次分析法确定评价指标的权重。
In this paper the selection and optimum of operation of the pressure type cold primary air fan in large boiler were analyzed.
分析了大型锅炉正压冷一次风机选型及运行优化要点，指出煤种和空预器漏风率是影响一次风机选型的主要因素。
Presents the selection of cold and heat sources and design of the air system, water system, smoke control system and control system.
介绍了冷热源的选择及空调风系统、水系统、防排烟系统、自控系统设计。
Presents the selection of cold and heat sources and design of the air system, water system, control system and the safety measures for main equipment room in a air-conditioning application.
介绍了冷热源的选择及空调风系统、水系统、自控系统设计及主机房采取的安全措施，并做了几点设计总结。
So, on a cold, blustery January day, we set off eagerly for the nursery to make our selection.
所以，在一月份的一天，虽然天气寒冷，又刮着大风，我们还是急切的去了一家花房来挑选我们的礼物。
After comparison, some Suggestions are put forward for selection of plant ventilation type and air pipeline materials and some opinions are put forward for plant design in very cold areas.
通过比较，对厂房通风形式及风管材质的选择提出了建议，对高寒地区厂房设计提出了自己的看法。
The source of cold rolling wastewater was analyzed, the difficulties in dealing with cold rolling wastewater including selection of process, effluent quantity and quality of wastewater were indicated.
分析了冷轧废水产生的来源，说明了冷轧废水在处理工艺选择、水质、水量确定上的困难。
Depending upon the requirements of cold end temperature of tube wall of air preheaters, the method of cold air preheating and the criterion of selection for air heater are put forward.
根据空气预热器冷端壁温的要求，提出了冷风预热的方法以及暖风器选择的原则。
The characteristics of cold-rolled strip annealing practice have been introduced, and the equipment selection of old-rolled strip annealing has been discussed.
介绍冷轧板带退火工艺的特点，探讨柳钢冷轧板带退火的设备选择。
Based on the data from 25-year rice anther culture breeding and contemporary conventional breeding in cold region, their selection efficiency were compared.
张云江，张淑华，孙岩松对25年寒地水稻花培育种与同期常规育种统计资料进行了比较分析。
This paper presents a stress analysis and selection of processing parameter in cold-pressing forming process for manufacturing the automotive rear brake back plates.
介绍了汽车后制动底板冷压成形工艺的应力分析及工艺参数的确定。
This paper introduces cold pad-batch dyeing process with reactive dyes and appropriate dye selection.
介绍了活性染料冷轧堆染色工艺及染料选择的方法。
The selection control system is the critical procedure in the final product line of cold rolling mill.
分选控制系统是冷轧镀锡带钢生产线中的关键环节。
The selection of base oils of aluminum cold-rolling oil and its technics were studied by using the products from the ISOSIV molecular sieve unit in SINOPEC Jingmen Branch as main materials.
以中国石化荆门分公司ISOSIV分子筛工艺装置生成油或产品为主要原料，开展将其应用为铝冷轧制油基础油的选择与工艺研究。结果表明：经过调合，可以调整芳烃含量，用做中低档铝轧制油基础油；
From fresh fruits and vegetables to traditional chicken salad, our selection of cold items will be prepared to please your taste buds.
从新鲜水果，蔬菜到传统的鸡肉沙拉，我们凉菜系列早就准备好来取悦您的味蕾。
The obvious differentiation of cold-hardness fitted on the early period selection of cold-hardness.
不同抗寒性的分化也适宜于耐寒性状的早期选择。
The obvious differentiation of cold-hardness fitted on the early period selection of cold-hardness.
不同抗寒性的分化也适宜于耐寒性状的早期选择。
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