0 at a higher position or level than something else, or being the top part of something -- （位置或水平）较高的，较上的；上层的
1 the top part of a shoe that covers a person's foot and to which the heel and the sole are attached -- 鞋帮
2 a drug that causes a person taking it to feel very active and excited -- 兴奋剂
He died from multiple stab wounds to the neck and upper body.
Employing the upper bound in turn drops both sets of returns by only 15 per cent.
The students were told that upper-case target words would be presented brie-y on a computer screen between two rows of hash-signs (########).
We must be careful about condition (12) which specifies that the two upper surfaces have the same convexity.
