英语翻译Although stage plays have been set to music since the er

英语翻译
Although stage plays have been set to music since the era(年代) of the ancient Greeks when the dramas of Sophocles and Aeschylus were accompanied by lyres(里拉琴) and flutes,the usually accepted date for the beginning of opera as we know it is 1600.As part of the celebration of the marriage of King Henry IV of France to the Italian aristocrat(贵族) Maria de Medici,the Florentine composer Jacopo Peri produced his famous Euridice,generally considered to be the first opera.Following his example,a group of Italian musicians called the Camerata began to revive(复兴) the style of musical story that had been used in Greek tragedy.
From the outset(开始),railroad and canals were bitter competitors(激烈竞争者).For a time the Chesapeake and Ohio Canal Company blocked the advance of the Baltimore and Ohio Railroad through the narrow gorge(峡谷) of the upper Potomac,and the State of New York prohibited railroads from hauling freight in competition with the Erie Canal and its branches.These restrictions(限制) and the slow pace of railroad building meant that canals carried twice as much tonnage as railroads even as late as 1852.But railroads had the advantage of speed and year-round operation (canals closed down for the winter freeze) and could be located almost anywhere,regardless of terrain(地形) and the availability of water.These assets,combined with a slight price advantage,produced a victory for railroads during the 1850's.By the end of the decade,they took most of the nation's passenger traffic and carried more freight than the canals.
Good morning,students.Today we will continue our investigation of the mosquito(蚊子).We all thought that mosquitoes follow skin odors(气味),but no such odor has been identified.It turns out,in fact,that no skin seems to be as attractive to a mosquito as a current of air(气流) having the right degree of warmth and humidity(湿度).But,a mosquito can be turned off its course by a repellent(驱蚊剂).This is how it works:a mosquito senses humidity in a airstream by means of tiny pores(气孔) in the hairs located on its antennae(触角).These hairs send electrical impulses to the central nervous system whenever they encounter humidity in the air.The repellent blocks the pores through which mosquitoes sense the presence of water vapor(水汽) in the air.As a mosquito comes in for a landing on a warm moist body,the repellent blocks the mosquito's sensors,and realizing that it has lost its moist current of air,it instinctively changes its course.

虽然戏剧音乐一直以来的时代(年代时的古希腊戏剧与埃斯克勒斯伴有瑟(里拉琴)和长笛,一般公认的日期开始歌剧因为我们知道它是在公元1600年左右.作为庆祝活动的一部分,亨利四世国王的婚姻的法国对意大利贵族(贵族)玛丽亚·Medici,佛罗伦萨著名作曲家珈古伯产生Euridice精灵,通常被认为是第一个歌剧.他的例子后,一群意大利音乐家们称为Camerata开始恢复(复兴风格的音乐故事),已被广泛使用于希腊悲剧.
从一开始,铁路(运河苦对手(激烈竞争者).今后一段时间内切萨皮克和俄亥俄州运河阻塞的不断发展,公司巴尔的摩、俄亥俄峡谷铁路穿过狭窄的峡谷(朝鲜),纽约州的铁路货运禁止从拉竞争伊利运河和枝条.这些限制(限制)和缓慢的铁路建设意味着运河携带两倍的吨位作为铁路连到1852年.但是铁路运输的优势,全年的运行速度(运河关闭冬季冻结)和可能的任何地方,不管位于地形(地形)和供应水.这些资产,加上一个轻微的价格优势,产生了胜利,在1850年的铁路.在2010年底,他们把大部分的国家的客运、货运比这个更水渠.
同学们,早上好.今天我们继续调查的蚊子(蚊子).我们都以为蚊子跟随皮肤的气味难闻的气味(),但是没有这种气味已被确定.原来,但是,一只蚊子可以关掉它被排斥的过程(驱蚊剂).这是它怎么工作:一只蚊子感官湿度在气流通过细小毛孔(气孔)在头发位于触角(触角).这些毛派电脉冲中枢神经系统,每当他们遇到空气中的湿气.毛孔的排斥街区通过蚊子意识在场的水汽(水汽)在空中.作为一种蚊子来的身体,在温暖潮湿的排斥街区蚊子的传感器,实现,它已经失去了它的滋润,它会本能地改变它的课程.