困难difficulty; financially difficult
女nü in ancient Chinese astronomy); female
它it; [used as a meaningless mock object]
常law and order; regular pattern
所place; used in the names of institutions
才talent; capable/talented person
极the utmost point; do one's best
熟悉know something or somebody well; be familiar with
痛快joyful; to one's great satisfaction
知识knowledge; pertaining to knowledge, learning or culture
经验experience; knowledge or skill obtained through practice
讲speak; as far as something is concerned
长城the Great Wall; impregnable bulwark
学生证student identification/identity card