1

那个

nàge

that one that thing that (as opposed to this) (used before a verb or adjective for emphasis) (used to humorously or indirectly refer to sth embarrassing, funny etc, or when one can't think of the right word) (used in speech as a filler, similar to "umm", "you know" etc) (euph.) menstruation sex also pr. nèige

=2

学生

xuésheng

student schoolchild

=2

学生

xuéshēng

disciple; follower (Classifier: 位 m) student; pupil (Classifier: 位 m)

3

正在

zhèngzài

to be in the process of (doing sth); to be currently ...-ing

4

学习

xuéxí

to learn to study

5

社会学

shèhuìxué

sociology