Trap-door
天窗；活板門
?? 詞語組成解析
trap
[tr?p]
vt. 誘騙;使受限制;困住;使（水與氣體等）分離;
n. 圈套;（對付人的）計謀;（練習射擊用的）拋靶器;（捕捉動物的）夾子;
vi. 設陷阱;裝捕捉機;設圈套;
door
[d?r]
n. 門，戶;出入口;一家[戶];通道;
??? 情景例句
She had to work her way through law school.
她必須半工半讀學法律。
I used to set my alarm clock for exactly 7 a.m.
我過去常將鬧鐘調為上午7點整。
The guest who arrives half an hour too soon is the greatest nuisance.
客人提前半小時到達是令人討厭的。