tā / bù / jiā / yǎn / shì / de / xiào / róng / ràng / dà / jiā / dōu / kàn / chū / tā / zhēn / de / hěn / kāi / xīn

她不加掩饰的笑容让大家都看出她真的很开心。

Her undisguised smile showed everyone that she was truly happy.