这个程序只需要一行代码就能运行。

This program can run with just a ___one-line code.

主持人用一个简短的俏皮话活跃了气氛。

The host lightened the mood with a clever ___one-line quip.

这幅画是用一笔不间断画成的。

This drawing was made with a ___one-line stroke.