Open-door system
[經] 門戶開放制度
?? 詞語組成解析
open
['op?n]
adj. 敞開的，開著的;公開的，公共的;坦率的;有議論余地的;
vt.& vi. （打）開;開始;睜開;啟動;
n. 戶外，野外;空曠;公開;
vi. 使打開;展示，顯現;
vt. 張開;開放;開張營業;為（建筑物）揭幕;
door
[d?r]
n. 門，戶;出入口;一家[戶];通道;
??? 情景例句
So, you're an exchange student.
哦，你是一名交換學生。
I should have studied last night, but I was too tired.
我昨晚應該學習，但是我太累了。
Fortunately we found some that was still dry and carried it back to the cave.
幸好，我們找到了一些干木柴，并把木柴抱回巖洞。