点击下方单词,选择对的这个单词
名词
1. 持续而低沉的声音;隆隆声;辘辘声;咕噜声A rumbling is a low continuous noise.
2. (情况恶化的)迹象,传闻;怨言Rumblings are signs that a bad situation is developing or that people are becoming annoyed or unhappy.
1. a loud low dull continuous noise
e.g. they heard the rumbling of thunder
Synonym: rumblegrumblegrumbling
多通过句子记忆单词,而不是单独死记硬背。