人們的臉上有無拘無束的快樂。
There was unrestrained joy on the faces of the people.
她的婚姻出了問題，她極不快樂。
Her marriage is in trouble and she is desperately unhappy.
盡管他們很快樂，但總缺少點什么。
Happy as they were, there was something missing.
他是一個快樂的不抱怨的旅伴。
He was a cheerful and uncomplaining travel companion.