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
We were both on the tennis team.
我们都是网球队的队员。
I've never read a more stirring story.
我没有读过比这更鼓舞人心的故事。
He dreamed of traveling to remote South Sea Islands.
他曾梦想到遥远的南海诸岛去旅游。