1+1=?who can tell me?

1+1=?who can tell me? Who can tell me Who can tell me Who Can Tell Me who can tell me who can tell me, who can tell me? 1+1到底等于几 who can tell me? sin2α · cos2α=1/2sin4α who can tell me why? Can you tell me?Who? Who can tell me why? who can tell me?翻译 Who can tell me why? Who‘s SB?Who can tell me? Who is him,Can you tell me,please?tell me who can tell me what is love what is love Who can tell me Who can tell me 山楂 in English