排憂解惑-二姐不比憂慮

這個是科學家一家之言，他們也是研究了一個方麵；youtube上說的也應該可行：that if an adult can spend 5 years staying in the same environment that a baby is in and focusing on learning a new language, s/he can do as well as a baby does。但同從小孩時學起的相比還應該有點區別。
那個百老惠的男演員學的不就很地道了嗎。