https://online2.tingclass.net/lesson/shi0529/10000/10243/72.mp3
https://image.tingclass.net/statics/js/2012
本期內(nèi)容：
doubt is the key to knowledge
懷疑是知識的鑰匙
首先我們來學(xué)習(xí)一個新單詞 doubtD-O-U-B-T 懷疑
再來學(xué)習(xí)一個表達
sth is the key to sth 什么的鑰匙 這里注意介詞要用to
the key to the car 車的鑰匙
the key to my house 我房子的鑰匙
doubt is the key to knowledge
懷疑是知識的鑰匙
