如下
+　 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＞　is greater 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π　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&　ampersand, 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&　ampersand = and～　swung dash 代字号§　section; division 分节号→　arrow 箭号；谢谢，能不能举一个实用的例子。什么实用的例子？比如1+1=2用英语为 One plus one equals two就像：三点二，三分之二，二的三次方。。。。这类的平时常用的，谢谢。Three point two two-thirdsTwo of the three power