radiant

adj. /ˈreɪdiənt/ C1

容光焕发的；灿烂的

Showing great happiness, love, or health; shining brightly.

仙境例句

Her sister's radiant smile showed how happy she was to see Alice again.

姐姐笑容灿烂，一看就知道，再次见到爱丽丝让她高兴极了。