开放

例句：

1. 1. The door is open;please come in.
   门开着，请进来。
2. 2. The window is open; let's see the view.
   窗户开着，让我们看看风景。
3. 3. The book is open;you can take a look inside.
   书是开着的，你可以翻看一下。