1.有关数学运算

add，plus加?

subtract减?

difference差??

multiply,times乘?

product积?

divide除

divisible可被整除的?

divided evenly被整除?

dividend被除数，红利?

divisor因子，除数

quotient商?

remainder余数??

factorial阶乘?

power乘方?

radical sign, root sign根号

round to四舍五入?

to the nearest四舍五入

2.有关集合

union并集?

proper subset真子集?

solution set解集