Crystal filter
[电] 晶体滤波器
🧩 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
Uh, are you going to be busy this evening?
今晚忙吗？
I know the boy whose father is a policeman.
我知道那个男孩的父亲是警察。
'Would you mind unlocking this suitcase please?'
“请打开这只手提箱好吗？”