midpoint

柯林斯詞典

1. N-SING The midpoint between two things is the point that is the same distance from both things. 中點(diǎn); 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(diǎn)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(jìn)程的)中間[oft N 'of' n]
She has not yet reached the midpoint of her life. 她尚未達(dá)到人生歷程的一半。