我妹妹很固执，你要她改变心意根本就是白费力气。
My sister is very stubborn. You’re just beating your head against a wall trying to make her change her mind
我妹妹很固执，你要她改变心意根本就是白费力气。
My sister is very stubborn. You’re just beating your head against a wall trying to make her change her mind
