Closed system
[计] 闭合系统\\n[化] 封闭系统
🧩 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
It's a perfect day for a walk.
这可是一个散步的好天气。
I'll take care of it.
我来办这件事。
The ground supported fewer plants, and the insects which lived on these plants died out.
地上长的植物少了，生活在这些植物上的昆虫就消亡了。