单词	passband
释义	passband noun pass·​band ˈpas-ˌband  : a band of frequencies (as in a radio circuit or a light filter) that is transmitted with maximum efficiency Word History First Known Use 1922, in the meaning defined above
随便看	soften the blow soften up softened softened up softener softeners softening softening point softening up softenings softens softens up softer softest softhead softheaded softheadedly softheadedness softheadednesses softheads softhearted softheartedly softheartedness softheartednesses softie

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