空中传来一阵低沉的嗡嗡声。There was a low humming sound in the sky.直升机的嗡嗡声打破了沉寂。The silence was broken by the whirring of a helicopter.他能听到真空吸尘器的嗡嗡声。He could hear the whirr of a vacuum cleaner....
Sue screamed, not loudly, more in surprise than terror.休尖叫起来，声音不大，吃惊多于恐惧。His report was scathing about Loyalist and Republican terror groups.他的报告猛烈抨击了忠英派和共和军的恐怖组织。Numb with terror, she stared at the departing maraud-ers....