to become visibly happy or excited when seeing someone or something
当看到某人或某物时，变得明显开心或兴奋 (dāng kàn dào mǒu rén huò mǒu wù shí, biàn dé míngxiǎn kāixīn huò xīngfèn)
"Her eyes lit up for her little son as he ran to her."
"她的眼睛 为她的小儿子亮了起来，当他跑向她时。" (tā de yǎnjīng **wèi tā de xiǎo érzi liàngle qǐlái**, dāng tā pǎo xiàng tā shí.)
to think deeply about your emotions, actions, or experiences
to study or investigate something deeply
to start successfully
to increase the amount of goods sold abroad
to control or keep inflation at a manageable level
to make progress easier for someone
