Don't stand above the masses.

　　勿高踞于群众之上。(比喻一非正上方)

　　The mountain is 700 feet above sea level.

　　这座山海拔700 米。(非正上方)

　　There is a small building below the hill.

　　山下有座小楼房。(非正下方)

　　There is a submarine under the water.

　　水下有艘潜水艇。(正下方)

　　Water was found ten feer below the surface.

　　在地面下10 英尺处找到了水。(非正下方)

　　The peasants are cooling themselves under the trees.

　　农民们正在树下乘凉。(正下方)

　　over under正上下，低高below 与above

　　The temperature in the room is below (or under)30℃。

　　室温是摄氏30 度以下。(数量词两者皆可)

　　Do you have anything in the way of computers below (under)$10000?

　　你们有哪些价格低于10000 美元的计算机?

　　(数量词两者皆可〕

　　beyond 超出、无、不能

　　例：It's quite beyond me (It is more than I can understand)。 这我完全不懂。

　　Don't stay out beyond 10 o'clock.

　　不要在外呆到10 点以后还不回家。

　　But the gratitude from the bottom of my heart to the students and my old colleagues