"convenient and fast" 可以用来形容它很方便快捷。
这是一个常用的英文短语，来源于英语日常用语。
例句：
Onpne shopping is convenient and fast. (网上购物很方便快捷。)
This new app makes booking a ride convenient and fast. (这个新应用程序使预订出租车变得方便快捷。)
The new express lane at the grocery store makes shopping convenient and fast. (杂货店的新快购道使购物变得方便快捷。)