英 [bɪˈtwiːn] 美 [bɪˈtwiːn]
prep. （空间上）在……中间；（时间上）在……之间；（数量、重量、距离等）介于……之间；分隔着；（表示两方或多方关系）在……之间；合用，共享；通过共同努力，一起；（两人）私下间；往返于
adv. （空间或时间上）介于……之间（in between）[1]
柯林斯英汉双解大词典
between /bɪˈtwiːn/ CET4 TEM4
1.PREP If something is between two things or is in between them, it has one of the things on one side of it and the other thing on the other side. 在…中间
2.PREP If people or things travel between two places, they travel regularly from one place to the other and back again. (往返) 于…之间 [PREP pl-n]
3.PREP A relationship, discussion, or difference between two people, groups, or things is one that involves them both or relates to them both. (表示相互关系) 在…之间 [PREP pl-n]
4.PREP If something stands between you and what you want, it prevents you from having it. 在…之间 (阻碍) [PREP n 'and' n]
5.PREP If something is between two amounts or ages, it is greater or older than the first one and smaller or younger than the second one. (数量、年龄) 介乎…之间 [PREP num 'and' num]