unsubstantiated
英 [ʌnsəb'stænʃɪeɪtɪd]
美[,ʌnsəb'stænʃɪetɪd]
考试真题
- There are reports that some military aircraft flew in formation when they were low on fuel during the Second World War, but Dr. lissaman says they are unsubstantiated.
2010年考研真题（英语二）阅读理解 Section Ⅱ