！regularly词根为regular 词缀为ly，regularly，adv. 定期地，有规律地；频繁地，经常地；均匀地，匀称地；（语法）变化规律地
once there were regularly scheduled airlines, it became impractical to make a business trip by ocean liner.一旦有了定期的飞机航班，乘坐远洋客轮出差就变得不切实际了。
水利万物而不争,
而万物莫能与之争。
