The long vowels have undergone much modification.
长元音经历了太多的修正。
The contact between languages consolidated the opposition of the long and short vowels.
语言间的接触强化了元音长短音的对立，导致长短元音最终确立。
Your child will learn to combine sound combinations for the short and long vowels for a, e, i, o, and u along with other special phonics sounds.
本课中，您的孩子将会学习如何组合各种长短音，元音及特殊音素的发声。
Story says singing is in some ways easier to simulate, because it tends to have long, sustained vowels, a more precise pitch, and a musical score to mask the imperfections.
Story表示唱歌在某些方面更容易模拟，因为它往往会有长的、持续的元音，更精准的高音，掩盖瑕疵的配乐。
The appearance of the tones allowed the lax and tense vowels more freedom, and then the long and short vowels came into being.
声调的产生反过来又促使松紧元音进一步松化，出现了元音长短音的萌芽。
In articulating a long vowel, the vowel-sound is sustained a long duration. The other vowels in English are relatively long.
发长元音时，声音持续时间较长。英语中其他元音均为长元音。例如。
Vowels are always the difficult points for learner. However, as long as we have Baozi Bear and his word machine, we no longer have to worry about that!
英语中的元音一直是小朋友们英语发音的难点，但是有了包子熊的单词机，就什么都不用担心啦！
Vowels are always the difficult points for learner. However, as long as we have Baozi Bear and his word machine, we no longer have to worry about that!
英语中的元音一直是小朋友们英语发音的难点，但是有了包子熊的单词机，就什么都不用担心啦！
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