1 to fail (a course)

1 research

2 a study

3 classifier: 项 xiàng

4 to research

5 to look into

1 branch of study

2 administrative section

3 division

4 field

5 branch

6 stage directions

7 family (taxonomy)

8 rules

9 laws

10 to mete out (punishment)

11 to levy (taxes etc)

12 to fine sb

13 classifier: 个 gè

1 science

2 scientific knowledge

3 scientific

4 rational

5 classifier: 门 mén

6 classifier: 个 gè

7 classifier: 种 zhǒng

1 science and technology

1 to include impromptu comic material in opera performance (idiom); to jest

2 buffoonery

1 deep and detailed investigation (idiom)

1 lit. to examine roots and inquire at the base (idiom); to get to the bottom of sth

1 to trace something to its source (idiom)