1. 不可数名词:高兴,愉快,喜悦
2. 可数名词:令人高兴的人或事,乐事,乐趣
3. 不可数名词:成功,满意,满足
词形变化
- 时态 joyed,joying,joys
- something or someone that provides pleasure; a source of happiness
- make glad or happy
- feel happiness or joy
- the emotion of great happiness
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