n.高兴；快活

Her cheerful smile lit up the room, making everyone feel welcome.
她的开朗笑容照亮了整个房间，让每个人都感到宾至如归。
His cheerfulness was infectious, spreading positivity throughout the team.
他的快乐具有传染性，给整个团队带来了积极的能量。
Despite the challenging situation, she maintained an unwavering cheerfulness.
尽管面临困难，她仍然保持着坚定不移的乐观态度。
The children's cheerfulness was a delightful contrast to the gloomy weather outside.
孩子们的快乐与外面阴郁的天气形成了鲜明的对比。
The morning sun brought a fresh sense of cheerfulness to the park, as people strolled leisurely.
清晨的阳光给公园带来了一种清新的快乐感，人们悠闲地漫步其中。
His cheerfulness in the face of adversity inspired us all to stay positive.
他在逆境中仍然保持的快乐鼓舞了我们所有人保持乐观。
The cheerful melody of birdsong filled the air, creating a tranquil atmosphere.
鸟儿欢快的歌声弥漫在空气中，营造出宁静的氛围。
The colorful decorations and lively music added to the cheerfulness of the party.
五彩缤纷的装饰和活泼的音乐增添了派对的欢乐气氛。
She greeted each day with boundless cheerfulness, embracing every moment.
她以无尽的快乐迎接每一天，欣然接受每一刻。
The cheerfulness of the staff made the shopping experience enjoyable and stress-free.
工作人员的快乐使得购物体验变得愉快且无压力。