点击下方单词,选择对的这个单词
1. 火药Gunpowder is an explosive substance which is used to make fireworks or cause explosions.
1. a mixture of potassium nitrate, charcoal, and sulfur in a 75:15:10 ratio which is used in gunnery, time fuses, and fireworks
Synonym: powder
多通过句子记忆单词,而不是单独死记硬背。