adj.發(fā)嗡嗡聲的；聲音低沉單調(diào)的
動詞drone的現(xiàn)在分詞形式.
Airplanes kept on droning in the distance throughout the night. 整個夜晚，遠處的飛機隆隆地響個不停。
A droning, mechanical delivery of the speech. 一篇低沉單調(diào)、呆板的演說
