四川邮电职业技术学院教案专用纸 14. constitute of: make up or form The committee is constituted of 23 members 15. Currently pstn, available in almost 200 countries and territories around the world. offers universal voice access to Most 750 million telephones around the world Constructio 主语:PSTN 谓语: offers 宾语: universal voice F]F available in almost 200 countries and territories around the world 多个国家和地区运行的PSTM 是形容词短语,修饰PSTN公共电话交换网,可译为“在世界上将近200 目前,几乎近200个国家和地区的PSTN向全世界七亿五千万部电话提供 广泛的话音通路 16. The primary emphasis, however, has been the enhancement of services rather than a simple replacement of existing equipment. 句中的 however用以加强语气 rather than…意为(而)不是… 17. Analogue: sth that is similar to sth else模拟物 Analogue computer: a computer that calculate things by measuring changing quantities such as voltage rather than using a binary system of counting.(二进制运算) 用物理量如电压,重量,长度等来表示数量的计算机。 18. a lot of issues will have to be revolved Have to be removed:必须被解决;必须加以解决. 19. of necessity:(of+n.--adj) necessary必然地,不可避免地 Eg. Of importance lmportant Of helt helpful 20. Passive voice:由助动词be+及物动词的过去分词构成,be有人称 和时态的变化 1)am/ is/ are+ done The first characteristic is achieved when a signal is digitally encoded to overcome degradation due to the transmission medium 为克服由于传输媒介引起的失真而对信号进行的数字编码,表现出了第 一个特点。 The ISdN concept was born in the mid 1960s as a part of the progressive Page 7 of 9 Teaching Plan of English for Telecommunications Unit 15四川邮电职业技术学院教案专用纸 Page 7 of 9 Teaching Plan of English for Telecommunications Unit 15 14. constitute of: make up or form The committee is constituted of 23 members. 15. Currently PSTN, available in almost 200 countries and territories around the world, offers universal voice access to almost 750 million telephones around the world. Construction: 主语：PSTN 谓语：offers 宾语：universal voice 句中 available in almost 200 countries and territories around the world 是形容词短语，修饰 PSTN(公共电话交换网)，可译为“在世界上将近 200 多个国家和地区运行的 PSTN”. Translation: 目前，几乎近 200 个国家和地区的 PSTN 向全世界七亿五千万部电话提供 广泛的话音通路。 16.The primary emphasis, however, has been the enhancement of services rather than a simple replacement of existing equipment. 句中的 however 用以加强语气 .rather than … 意为:(而)不是…. 17. Analogue: sth that is similar to sth else 模拟物 Analogue computer: a computer that calculate things by measuring changing quantities such as voltage rather than using a binary system of counting.(二进制运算) 用物理量如电压，重量，长度等来表示数量的计算机。 18. a lot of issues will have to be revolved. Have to be revoved: 必须被解决；必须加以解决. 19. of necessity: ( of + n. ----- adj.) necessary 必然地，不可避免地. Eg. Of importance ----- important Of help ------- helpful 20. Passive Voice: 由助动词 be＋及物动词的过去分词构成，be 有人称 和时态的变化。 1) am/ is/ are + done: The first characteristic is achieved when a signal is digitally encoded to overcome degradation due to the transmission medium. 为克服由于传输媒介引起的失真而对信号进行的数字编码，表现出了第 一个特点。 2) was / were + done: The ISDN concept was born in the mid 1960s as a part of the progressive