反义词：
leisure 安逸;空闲 adj.空闲的;有闲的;;或者业余的free
例句
尽管工作很忙，但偷得浮生半日闲，只要有时间，我就同家人在一起。
Although I am very busy, I try to find some leisure time. Whenever there is time, I would get together with my family
twenty序数词twentieth
例句：
这是他第二十个生日
This is his twentieth birthday
形容词quiet
例句：
这是个安静的地方
This is a quiet place.
can‘t = can not
例句
我今天不能去北京了
I can't go to Beijing today.=I can not go to Beijing today.
season复数seasons
例句：
一年有四个季节
There are four seasons in a year
