这个单词由两个部分组成：red（红色）和envelope（信封）。
redenvelope是一个由英文单词组成的组合词，所以可以根据每个单词的发音来读取整个词。
首先，读取red的发音，它的音标是 [rɛd]，其中'ɛ'发音类似于“e”；然后，读取envelope的发音，它的音标是 [ˈɛnvəˌloʊp]，其中'en'读作[ɛn]，'v'读作[v]，'l'读作[l]，'o'读作[ə]，'p'读作[p]。
所以，将这两个部分连起来读就是[ˈrɛd ˈɛnvəˌloʊp]。
The correct pronunciation of redenvelope is [ˈrɛd ˈɛnvəˌloʊp]. This word is composed of two parts: red and envelope. Redenvelope is a compound word formed by English words, so we can pronounce the whole word based on the pronunciation of each word. First, pronounce red, which is [rɛd], with 'ɛ' sound similar to "e". Then, pronounce envelope, which is [ˈɛnvəˌloʊp], with 'en' as [ɛn], 'v' as [v], 'l' as [l], 'o' as [ə], and 'p' as [p]. Therefore, when we combine these two parts together, the pronunciation is [ˈrɛd ˈɛnvəˌloʊp].