规则Rules：
标准数独基础上，数字从圆球开始沿着线条逐渐增大。
Classic rules applied. Additionally, numbers increasing from bulb on each thermometer.
◆例题 Example
◆在线涂鸦 Draw it Online
◆在线做 Do it by CTC
◆在线做 Do it by Penpa
设计主题Theme：
英文单词Cool（The English word Cool）🆒
