light·heart·ed /-ˌhɑrtəd/
(a.)快樂的;愉快的
lighthearted
adj : carefree and happy and lighthearted; "was loved for her
blithe spirit"; "a merry blithesome nature"; "her
lighthearted nature"; "trilling songs with a lightsome
heart" [syn: blithe, blithesome, lightsome]