上下， じょうげ
1. top and bottom, high and low, above and below, upper and lower ends, up and down
2. going up and down, rising and falling, fluctuating
3. going and coming back
4. upper and lower classes, ruler and ruled, the government and the people
5. first and...
上与下，高与低，上与下，上端与下端，上与下；起伏不定，涨跌交替，波动不定
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上， うえ
1. above, over, up
2. top, summit, upper part, head (e.g. of a staircase)
3. surface, on (top of)
4. the above (in a piece of writing), earlier part
5. superior, better, higher (position, rank, etc.), upper (class)
6. elder, older, senior
7. with res...
上，上面；上级，高级
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下， した
1. below, down, under, younger (e.g. daughter)
2. bottom
3. beneath, underneath
4. just after, right after
5. inferiority, one's inferior (i.e. one's junior)
6. trade-in
7. preliminary, preparatory
下，小；底；下面；紧接着，紧随其后；下级，下等；以旧换新；初步、准备