When something rattles or when you rattle it, it makes short, sharp, knocking sounds because it is being shaken or it keeps hitting against something hard. 使发出嘎嘎声; 发出嘎嘎声
adjective [原级] 担忧的；紧张的；恼火的
He swore in Spanish, an indication that he was rattled. 他用西班牙语宣誓，这表明他很紧张。
verb [vt. 及物动词] 发出嘎嘎声；发出连续短促的高声；咔嚓咔嚓前进；呆在……里；占用；（非正式）使紧张，使恼火（rattle 的过去式和过去分词）
Officials are not normally rattled by any reporter's question. 官员们一般不会因为任何记者的提问而紧张不安。
