名词
中文翻译：背景波
同义词：
['background noise', "background hum例句：1. The waves wereso strong that they could be heard froma distance.（海浪如此强烈，以至于可以从远处听到。）2. Thebackground noise was so loud thatit drowned out the speaker's voice.（背景噪音太吵了，以至于淹没了演讲者的嗓音。）"]
例句：
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1. The waves wereso strong that they could be heard froma distance.
海浪如此强烈，以至于可以从远处听到。
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2. Thebackground noise was so loud thatit drowned out the speaker's voice.
背景噪音太吵了，以至于淹没了演讲者的嗓音。
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3. The backgroundhum of the radio was soothing to herears.
收音机的背景嗡嗡声让她感到宁静。