你听不懂声线中的爱意你看不懂我眼中的柔情
[nĭ tīng bù dŏng shēng xiàn zhōng de ài yì nĭ kàn bù dŏng wŏ yăn zhōng de róu qíng]
It poetically means 'you cannot understand the love hidden in my voice, nor can you see the tenderness in my eyes.' It describes unreturned love, where deep emotions aren't recognized by the other person.