cheerfulnessKK [ˋtʃɪrfəlnəs] /ˈtʃɪɹfəlnəs/发音名词1开朗、乐观、愉快Her natural cheerfulness made the whole office feel lighter.她天生开朗的个性让整个办公室的气氛都轻松了起来。2欢乐、愉悦、好心情A sudden cheerfulness came over him when the rain stopped.雨一停,他突然涌上一股好心情。3明亮、温馨用于形容环境The yellow curtains added a certain cheerfulness to the room.黄色的窗帘为房间增添了几分明亮温馨的感觉。用这个字练口说→