But research shows that there are two preconditions to mastering English pronunciation: The model for imitation must be capable of correct pronunciation, and secondly, there must be sufficient time for contact with English.
研究指出，要掌握純正的英語發音，必須有兩個條件：學習的對象必須會準確的發音，其次，就是有足夠的時間接觸英語。