上端的用法和样例：
例句
-
圆形山谷一种出现在山脉谷地上端的陡峭山谷，常有小湖泊
A steep hollow, often containing a small lake, occurring at the upper end of a mountain valley. -
活字上端带有突出的字母或字的一小块木头或金属，涂上墨并压在纸上后就会留下印记
A small block of metal or wood bearing a raised letter or character on the upper end that leaves a printed impression when inked and pressed on paper. -
把你的名字填写在每页上端的括号内。
Put your name in brackets at the top of each page.
