Closed-circuit system
[电] 闭路系统
🧩 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
🗣️ 情景例句
Too much alcohol will spoil your health.
喝过量的酒有损健康。
The children were thrilled with joy at the sight of the parade.
孩子们看到游行队伍时异常兴奋。
As there are so many people about, the dogs have to be kept in a special enclosure.
由于来人太多，狗被关在专门的围栏里。