英 [ˈtʃɪəflnəs] 美 [ˈtʃɪrflnəs]
n. 高兴；快活
一月八日 黄百里香（Yellow Thymelaea） 轻快 （ Cheerfulness ）是农历还是阳历啊 ..
reward 回报，奖赏 joy/happiness/pleasure/rejoice/elation/cheerfulness 快乐，高兴，愉快 prudence/carefulness/caution 谨慎，小心 考试大编辑祝各位元霄节快乐！ .
... kindness ：亲切，仁慈，好意；仁慈（好心）的行为。 cheerfulness ：高兴，愉快。 uniform ：制服；全都相同的，一律的，清一色的。 ...
He said, with a great show of cheerfulness: "I bet there's been pirates on this island before, boys."
他露出充满兴趣的样子说：“伙计们，我敢说这个岛上以前一定有过海盗。”
The true source of cheerfulness is benevolence.
快乐的真正源泉是行善。
To be friendly you must feel friendly. Cheerfulness is the basis of friendliness.
要友善，你一定要给人友好的感觉：快乐是友善的基础。
She saw a therapist while a teenager, her mother said, but recovered her cheerfulness when she went to college.
What they also have in common is a resolute cheerfulness in the face of annoying questions about how much longer a recovery is going to take.
He showed up for work in war plans every day with the same cheerfulness, intelligence, and effort that had marked his entire decades-long service in the Army.