点击下方单词,选择对的这个单词
1. 积云Cumulus is a type of thick white cloud formed when hot air rises very quickly.
1. a collection of objects laid on top of each other
Synonym: pileheapmoundagglomeratecumulation
2. a globular cloud
Synonym: cumulus cloud
多通过句子记忆单词,而不是单独死记硬背。