英文标点符号.doc

+ plus加号；正号- minus减号；负号plus or minus正负号is multiplied by乘号is divided by除号is equal to等于号is not equal to不等于号is equivalent to全等于号is equal to or approximately equal to等于或约等于号is approximately equal to约等于号is less than小于号isgreater than大于号is not less than不小于号is not more than不大于号is less than or equal to小于或等于号is more than or equal to大于或等于号% per cent百分之per mill千分之infinity无限大号varies as与成比例(square) root平方根since; because因为hence所以equals, as (proportion)等于，成比例angle角semicircle半圆circle圆circumference圆周pi 圆周率triangle三角形perpendicular to垂直于union of并，合集intersection of 交，通集the integral of 的积分(sigma) summation of总和degree度minute分second秒Celsius system摄氏度 open brace, open curly左花括号close brace, close curly右花括号(open parenthesis, open paren左圆括号)close parenthesis, close paren右圆括号() brakets/ parentheses括号open bracket 左方括号close bracket 右方括号 square brackets方括号.period, dot句号，点|vertical bar, vertical virgule竖线&ersand, and, reference, ref和，引用*asterisk, multiply, star, pointer星号，乘号，星，指针/slash, divide, oblique 斜线，斜杠，除号/slash-slash, comment 双斜线，注释符#pound井号backslash, sometimes escape反斜线转义符，有时表示转义符或续行符tilde波浪符.full stop句号,comma逗号:colon冒号;semicolon分号?question mark问号!exclamation mark (英式英语) exclamation point (美式英语)apostrophe撇号-hyphen连字号- dash 破折号.dots/ ellipsis省略号single quotation marks 单引号double quotation marks 双引号 parallel 双线号&ersand = andswung dash 代字号section; division 分节号arrow 箭号；参见号 下划线。 在一个单词的下面，曰underline 独立一个下划线，曰underscore （eg: john_） 长的，用来填空，曰blank。（This is a(n) _. A. apple, B. run）阶乘factorial x平方=x squared， x立方=x cubed， x=x prime, x bar=x上