Cavity filter
[电] 空腔滤波器
🧩 词语组成解析
filter
['fɪltɚ]
n. 滤波器;滤光器;滤色镜;[化] 过滤器;
vi. 过滤;透过;渗透;
vt. 过滤;滤除;
🗣️ 情景例句
I don't know what-to do.
我不知道怎么做。
It won't take much time.
不会花很长时间的。
It must have been about two in the morning when I returned home.
我回到家时，肯定已是凌晨两点左右了。