midpoint
柯林斯词典
1. N-SING The midpoint between two things is the point that is the same distance from both things. 中點; 中心位置[oft N 'between/of' n]
...the midpoint between New York and Chicago. ...紐約與芝加哥之間的中點位置。
2. N-SING The midpoint of an event is the time halfway between the beginning and the end of it. (事件進程的)中間[oft N 'of' n]
She has not yet reached the midpoint of her life. 她尚未達到人生歷程的一半。
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midpoint /ˈmɪdˌpɔɪnt/ (also mid-point)
剑桥词典
midpoint noun [C usually singular] (DISTANCE)
a point half the distance along something such as a line
（線等的）中點
The driveway is 20 metres long , so the midpoint must be at 10 metres . 這條車道有20米長，所以中點一定在10米処。
midpoint noun [C usually singular] (TIME)
a point in the middle of a period of time
（時間的）一半，中間時刻
the midpoint of the football season 足球賽季過半的時候 返回 midpoint