音标发音英式音标 [ˌbaɪˈhɑːt]美式音标 [ˌbaɪˈhɑːrt]英式发音 美式发音 英英字典to learn something in such a way that you can say it from memory靠記憶；記住，背住by-heart剑桥字典by-heart柯林斯字典