opening

/ˈoʊpənɪŋ/

an open or empty space in or between things

中文释义：开口；缺口；开始

There was a small opening in the fence where the dog could escape.

篱笆上有个小缺口，狗可以从那里逃出去。

The opening of the new library attracted a large crowd of visitors.

新图书馆的开业吸引了大批参观者。