第三人称单数： classifies
过去式： classified
过去分词： classified
现在分词： classifying

Unlike americans , brazilians rarely classify themselves by race .

与美国不同的是，巴西人们很少按照种族给自己分类。

Intriguingly , there was also a virus that the researchers were unable to classify .

有趣的是，还有一种研究者们无法分类的病毒。

The challenge for mathematicians became how to classify the complete set of these simple groups .

数学家的挑战在于，如何对这些简单群的完整集合进行分类。

Today we find it quite natural to classify the world as a prerequisite to understanding it .

在今天，我们发现将世界分类作为理解这个世界的前提条件，是一件相当自然的事。

Its software can analyse digital images , including video , to recognise and classify facial expressions .

他们开发了一种可以分析数码图像和视频的软件，该软件可以对人的面部表情进行识别和分类。