Closed-circuit signaling
[电] 闭路发讯
🧩 词语组成解析
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
n. 发信号；打信号
🗣️ 情景例句
Are you sure you are dialing the right number?
你确定你打的号码是对的吗？
Put the receiver closer to your mouth.I can't hear you.
把听筒放近你的嘴，我不能听见你的话。
They say. So they still have them.
他们说。所以他们依然有圣诞袜。