笑逐颜开

tā bù yóu de xiào zhú yán kāi

他不由得笑逐颜开。

She couldn't restrain a smile of joy.

xún huí jù tuán lái dào shān cūn cūn mín men xiào zhú yán kāi bēn zǒu xiāng gào

巡回剧团来到山村，村民们笑逐颜开，奔走相告。

When the touring theatrical troupe arrived at the mountain village, the villagers all ran to tell one and another beaming with delight.

tā xiào zhú yán kāi de bēn xiàng wǒ

他笑逐颜开地奔向我。

As he ran toward me, his face broke into a wide grin.