15秒记一个单词(第705个)extensiveextensive /?k'stens?v/ adj. 广泛的;博识的击收听音频跟读 ↓↓↓ ↓↓↓ ↓↓↓例句/词组:Extensive research has been done into this disease. 对这种疾病已举行了广泛研讨。 英语表明:including or dealing with a wide range of information 广泛的;博识的