DOC《Basic building materials include: timber, mud, stone, marble, ...》

a measurement known as the gauge of the track. To maintain the alignment of the track it is either laid on a bed of ballast or else secured to a solid concrete foundation. Rail transport is an energy-efficient and capital-intensive component of logistics;

in contrast, a traditional wagon can carry no more than several tons of freight. rail transport [????] [??????????] n. 铁路运输 conveyance [??????????] n. 运送 by means of [???] [?????] [??] prep. 通过……方式 consist of [????????] [??] v. 由……组成 secure to [???????] [??] v. 固定在…… crossbeam [?????????] n. 横梁 tie [???] n. 枕木 gauge [?????] n. 轨距 alignment [??????????] n. 直线排列 ballast [???????] n. 道碴 concrete [?????????] n. 混凝土 energy-efficient [???????] [????????] adj. 能源节约的 capital-intensive [?????????????????] adj. 资本密集型的 logistics [????????????] n. 物流 wagon [??????] n. 四轮马车 freight [?????] n. 货物 Developments in technology have eroded some of the natural monopoly aspects of traditional public utilities. For instance, electricity generation, electricity retailing, telecommunication and postal services have become competitive in some countries and the trend towards liberalization, deregulation and privatization of public utilities is growing, but the network infrastructure used to distribute most utility products and services has remained largely monopolistic. erode [??????] v. 侵蚀 retailing [???????????] n. 零售 postal service [????????] [???????] n. 邮电业 competitive [???????????] adj. 竞争的 trend [?????] n. 趋势 liberalization [????????????????] n. 自由化 deregulation [????????????????] n. 撤销(价格, 费用方面的)管制规定 privatization [????????????????] n. 私有化 infrastructure [???????????????] n. 基础设施 distribute [????????????] v. 分配 monopolistic [??????????????] adj. 垄断的 An aspiring master would have to pass through the career chain from apprentice to journeyman before he could be elected to become a master craftsman. He would then have to produce a sum of money and a masterpiece before he could actually join the guild. aspiring [??????????] adj. 有志向的 master [???????] n. 大师 pass through [????] [????] v. 经过 apprentice [?????????] n. 学徒 journeyman [??????????] n. 学徒期满的职工 masterpiece [???????????] n. 杰作 actually [?????????] adv. 实际上 guild [????] n. (中世纪的)行会 A craftsperson who perhaps has at first sold craft items only to friends or at local bazaars may find that increased demand leads to a wider clientele and sales by mail order, at crafts fairs, or through a shop. craft [??????] adj. 手工制作的 bazaar [??????] n. 集市 clientele [???????????] n. 顾客 fair [???] n. 市集 There is a fine line of distinction between crafts produced by amateur hobbyists for their personal satisfaction and those made by gifted artisans with........