ascent
/əˈsent; ə`sɛnt/ n
1 act of ascending 上升; 升高
the ascent of Mount Everest 登埃佛勒斯峰（即珠穆朗玛峰）
Who was the first man to make an ascent in a balloon? 第一个乘气球升空的人是谁?
2 upward path or slope 上坡路; 爬坡
The last part of the ascent is very steep. 最後一段上坡路很陡.