Joyous means very happy, or likely to make people very happy. It sits close to joyful, and in many sentences you could swap them and nobody would mind.

Joyous Joyous means意思是 very happy非常開心 or likely to make people very happy或會讓人非常開心 It sits close to joyful它跟joyful很接近 and in many sentences而且在很多句子裡 you could swap them你可以把兩個字互換 and nobody would mind沒有人會覺得怪。

Though actually, joyous often likes events, news, and occasions a little more than faces: a joyous celebration, joyous news, a joyous day. Joyful sits a bit more easily on people and feelings, but the overlap is huge — do not treat them as two different ideas.

Though actually不過其實 joyous often likes events, news, and occasions a little more than facesjoyous比較常用在事件、消息、場合，而不是臉上的表情 a joyous celebration, joyous news, a joyous day像joyous celebration（歡樂的慶祝）、joyous news（喜訊）、a joyous day（歡樂的一天） Joyful joyful sits a bit more easily on people and feelings比較容易用在人和感受上 but the overlap is huge不過重疊的部分很大 do not treat them as two different ideas不要把它們當成兩個不同的概念。

Both are warmer and bigger than just “happy.” Joyous can sound a touch more formal or storybook. You hear it in writing, speeches, and songs more than in quick chat, where happy or glad will do.

Both are warmer and bigger than just "happy"兩個字都比單純的happy更溫暖、更盛大 Joyous can sound a touch more formal or storybookjoyous聽起來可以更正式一點，或帶點故事書的味道 You hear it你會聽到它 in writing, speeches, and songs出現在文章、演講，和歌曲裡 more than in quick chat比在隨口聊天裡更常見 where happy or glad will do那種場合happy或glad就夠用了。