请解释老友记句子：you never know

请解释老友记句子：you never know you never know,never know... You never know my you never know一首歌 You will never know you’ll never know You Never Know歌词 You never know how much I to you changed 这个翻译成汉语怎么解释? 句子取自老友记don't you remember when you made him cry using only y You will never know that.. You never know "I like 《老友记》台词解释Did she give you a bottle of anti-depressants again