Bbn
宽频带噪声（broad band noise）
🗣️ 情景例句
I researched it for over a year.
我研究了一年多。
No matter what the excuse, you must not be late.
不管有什么借口，你一定不要迟到。
Will you let us have the specifications?
规格说明书可以给我们吗。