略图

huà lüè tú

画略图

draw a rough sketch

zhè shì cōng cōng huà chéng de lüè tú

这是匆匆画成的略图。

It was a quick outline sketch.

jì shù xíng suàn fǎ de zhí xíng xiào lǜ míng xiǎn yōu yú lüè tú lèi suàn fǎ

计数型算法的执行效率明显优于略图类算法。

The performance of count-based algorithms is better than that of sketch-based algorithms.