(from) April to June inclusive/15 to 20 inclusive etcINCLUDEused to refer to a range of months, numbers etc, including the ones that start and end the range 从4月到6月〔包括4月和6月〕/从15到20〔包括15和 20〕 RegisterIn everyday American English, people usually use through rather than inclusive: 在日常美国英语中，人们一般用through，而不用inclusive
They are open Monday through Friday. 他们周一到周五开门。
→ (from) April to June inclusive/15 to 20 inclusive etc at inclusive(1)