Behind closed door
与外界隔绝地;秘密地
🧩 词语组成解析
behind
[bɪ'haɪnd]
prep. （表示位置）在…的后面;支持;（表示顺序）在身后;（表示比较）落后于;
adv. 在后面;向后;在后面较远处;（落）在后面;
n. 〈口〉屁股;
be构成一些介词+hind藏在后面→在…后面
closed
[klozd]
adj. 关闭着的，封闭着的;密闭着的，保密的;<美>准备好了的，定了契约的;
v. “close”的过去式和过去分词;
clos=close关闭+ed已...的→关闭了的
door
[dɔr]
n. 门，户;出入口;一家[户];通道;
🗣️ 情景例句
you wouldn't need as much money.
不需要花多少钱。
That's a book.
那是一本书。
As they had brought a spear gun with them, they had plenty to eat.
由于他们随身带了一支捕鱼枪，因此，吃饭不愁。