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Show cheerfulness even when you don 't feel it .

即使没有快乐的感觉，也要努力表现出来。

Perhaps my cheerfulness rests on a slender hope .

也许我的快乐是建筑在渺茫的希望之上的。

Diana and mary lost their usual cheerfulness as the moment for leaving their home and their brother came closer .

随着离家和离开哥哥的日子一天天临近，戴安娜和玛丽渐渐失去了平日的欢乐。

Too much cheerfulness can make you gullible , selfish , less successful - and that 's only the tip of the iceberg .

太多的欢乐会使你变得易受骗，自私，而且不那么成功而这些只是冰山一角。

Midday sun streamed into the drab little room which gave it a sudden cheerfulness .

中午的阳光射入这间毫无生气的小屋，突然给了它一种快乐的气氛。