thunder1/ˋθʌndɚ; ˈθʌndə/n [U] the loud noise that you hear during a storm after a flash of LIGHTNING 雷声: a huge storm with thunder and lightning 雷电交加的暴风雨a clap/crack of thunder (=one sudden noise of thunder) 一声霹雳—thundery adj
thunder2v 1 it thunders if it thunders, a loud noise comes from the sky after LIGHTNING 打雷2 [I] to make a very deep loud sound 发出轰隆隆的响声: The guns thundered in the distance. 远处传来隆隆的炮声。