She knew that her efforts to feign cheerfulness weren't convincing.她明白自己强作欢颜是瞒不了谁的.Cheerfulness doesn't always imply happiness.快活并不总是意味着幸福.Skateboarding gives one the extreme sense of cheerfulness and success.滑...

She knew that her efforts to feign cheerfulness weren't convincing.她明白自己强作欢颜是瞒不了谁的.Cheerfulness is the best promoter of health.快乐最利于健康。Cheerfulness doesn't always imply happiness.快活并不总是意味着幸福....

n.高兴，快活...

cheerfulness的音标：cheerfulness的英式发音音标为：['tʃɪəfəlnəs]cheerfulness的美式发音音标为：['tʃɪrfəlnəs]...