times也是乘的意思,跟multiplied by同义,但informalplus跟minus都可以指符号(+)(-)名称或是one plus one is[OR equals] two. (1+1=2)"add A to B"或是"subtract (sth.) (from sth.)""multiply A by B" or "multiply A and B (together)""divide (sth.) by sth."乘号叫做 multiplication sign ;除号 division signmultiple 是指倍数,lowest common multiple 最小公倍数