Acoustical filter
[电] 滤声器
🧩 词语组成解析
a. 听觉的, 声学的
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
What do you mean?
是什么意思？
He was anxious about his son's safety.
他担心他儿子的安全。
The remains of plants and animals that lived on land are much more rarely preserved, for there is seldom anything to cover them over.
曾在陆地上生活过的动植物的遗体被保存下来的更为罕见，因为陆地上几乎没有什么东西覆盖它们。