number ['nʌmbɚ] 词频1 词根: number

n. 数字;数量;号码;编号; v. 标号;总计;把…算作;

💡 numer, number 表示”数字”;”计算”,”估算”

"The number of people employed in agriculture has fallen in the last decade."

近义：numerate, reckon, recount, sum, tally, cipher 反义：remove, subduct, take, withdraw, deduct

dial ['daɪəl] 词频4 词根: di

n. 日晷;钟（表）面，标度盘;拨号盘;表盘; vt.& vi. 打电话，拨电话号码; vt. 用标度盘测量;通过表针控制;

💡 di日子+al...的 →日晷

"an alarm clock with a luminous dial"

近义：appearance, aspect, mug, visage, countenance, face

operator ['ɑpəretɚ] 词频2 词根: oper

n. 经营者;操作员;电话接线员;运算符;

💡 oper 工作 + ator表示做...工作的人或物 → n.操作人员，接线员

"a semi-skilled machine operator"

近义：laborer, labourer, operative, workman, employee, telephonist