从语义上来说：pigeon可以指鸽子（可数）或野鸽肉（不可数），所以信鸽和鸽肉做的菜都可以用pigeon。dove则是用来当作和平象征时可以用，还可以用引伸义，指政治上的温和人物。从种类上来说：pigeon体形大，尾圆，dove体形较小，尾长而细。白鸽，鸽子在过去是传递信息的主要交通工具，不像现在用手机、传真之类的机器传达方式，这样，鸽子就成了人们沟通的桥梁，在人的希望里，都是希望好的东西永远伴随自己，传递信息的鸽子因此就承载了人们很多的愿望。鸽子（pigeons）是“一夫一妻”制的鸟类，鸽子（pigeons）是“一夫一妻”制的鸟类。鸽子性成熟后，对配偶具有选择性，一旦配对就感情专一，形影不离。不象其他家禽那样滥交滥配。在同一鸽群中，若雌雄鸽数量不相等，还可能出现二公或二母的同性配偶。鸽子配对后，公母鸽都参加营巢、孵化和哺育幼鸽活动。鸽子在丧偶后要经过较长时间才能重新配对。在生产中为了培育优良品种，提高鸽子的品种质量，避免近亲繁殖造成品种退化，可有计划地人工选配。若雌雄鸽自由配对后，也可重新拆开再配，但非常费时费力。因此，在育种时，要掌握鸽子的这一特性，尽早制定人工选配计划，以防自由配对。
China is the world's largest coal production and consumption Country，and is also one of the few countries which regard coal as the main sources of energy ,the coal energy rates was very high among energy consumption structure rates in our country.Among them, most of the coal combustion for power generation and heating industry.For large coal-fired power station and boiler,Pulverized coal combustion is the main way of combustion.However, It's one of the most important factors which has restricted the sustainable development that the use of pulverized coal combustion efficiency is not high and the environmental pollution caused by burning of our country one of the most important factors.
Based on the coal combustion efficiency and low pollution comprehensive consideration," corona charged pulverized coal combustion mechanism and experiment research" is put forward.By means of high voltage electrostatic field on the solid particles and gas can produce electric charge effect,On one hand, the gas atoms or ions moving kinetic energy is very high,and when contact with the pulverized coal particles,it'll transferred part of energy to the coal particle surface, and lead to Particles in an unstable high-energy state , increased the particle surface activity; On the other hand, oxygen, carbon monoxide, corona methane gas ion, electron, has high energy, those make accelerate coal particle combustion reaction rate, reduce combustion reaction temperature become possible. However, in the actual production process of coal, coal is usually in a flow state. From theoretic analysis, the flow of pulverized coal combustion efficiency of pulverized coal is greater than under the static state, Therefore,the pulverized coal flow in charge of combustion enhancement is possible.
In this paper,on the basis of pulverized coal particles are charged successfully, through using of the original cyclone electrostatic charge system to build the pulverized coal flow injection charge combustion system. using a photographic record and analysis of its ignition and combustion state, using sampling thermal analysis method of burnout to exploring Charged pulverized coal flow combustion status.
Key words: corona discharge, the pulverized coal flow, combustion, thermal analysis
翻译了一会，还挺累，不说百分百准确，但是基本没什么大的语法错误，望采纳。
1、
自行车运动
本身就是户外运动。可以说任何自行车都适合户外运动。
2、但是没有一种自行车可以适合于任何户外运动。自行车有不同的种类，适应不同的户外运动。例如
公路车
，适合铺装道路上竞速；DH车适合坠山运动。XC车的适应面稍微广泛点，但是哪一样都做不到极致，不是很好。其它还有BMX车、
死飞
、
攀爬车
等，不同车型，适应于不同的运动。
保险小编帮您解答，更多疑问可在线答疑。您好！骑行运动一般是在野外进行，也有环城骑行。无论哪一种，都需要您有强健的体魄和娴熟的技巧。户外骑行是介于旅游与运动之间的一种活动，相比较一般的旅行，风险性相对要大一些。因此，无论是组织者还是参与者，除了出行前精心准备，规划好合理的路线，做足自我保护的功课外，购买一份让大家心安的保险同样重要。 给您推荐。的产品丰富，价格实惠。有多款适合户外运动的保险产品供您参考。以下为您推荐几款： “骑行安心”自行车运动专项保险（提供骑自行车进行健身休闲与骑游、长途骑行活动以及为完成骑行活动而换乘公共交通工具期间，因意外事故导致的身故、残疾及支出的合理医疗费。
