您要查找的是不是：
- 开open
- 开关power switch
- 花开bloom
- 开票make out an invoice
- 开车to drive a car
- 根号内的数the quantity under a radical sign
- 开店set up shop
- 他们起源于脱根号。They arise because of the removal of radicals.
- 开花abloom
- 根号换元radical substitution
- 开门open (the) door
- 根号矩形square root rectangle
- 去根号算法algorithm of removing radical sign
- 隔开to separate
- 根号中的数字radicand
- 开出burst into
- 开题报告opening speech; opening report
- 开本format
- 开发票invoice
- 开奖draw a lottery
