Closed-loop
封闭环
🧩 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
loop
[lup]
n. 圈，环;[医]宫内避孕环;回路;弯曲部分;
vt.& vi. （使）成环，（使）成圈;以环连结;使翻筋斗;
🗣️ 情景例句
Mr. Marker and his wife have invited me to a Christmas dinner.
马克先生和他妻子邀请我吃圣诞晚宴。
I've been here for three weeks, and so far I've enjoyed it.
我已经在这里逗留了三个星期，到现在为止，我过得很好。
No. The next development was to carve the characters on a piece of wood.
是的，不象。下一步的发展是将汉字刻在一片木板上。