“中点”用英语怎么说

比赛四十九秒钟后,赛跑选手抵达了中点.The runners reached the halfway mark in the race after 49 seconds.碳酸滴定中点和等量点也高得多.The midpoint and equivalence point for carbonic acid are much higher.在两壁间的中点永远找不到粒子.The particle is never to be found ha...

“中点”的拼音为：zhōng diǎn...