openadj.开着的；开放的；公开的v.打开；张开；展开；摊开；开始(某事物)；开张；营业；以…开头；宣布启用n.户外；公开open line开通路线,明线

1. Hold the door open please,it is too stuffy here.
   请把门敞开，这儿太闷了。
2. Anything will do to keep the door open.
   只要能使门敞开着，什么东西都行。