Our friends have a look of cheerfulness.

This is something like your paradise,'said she, making an effort at cheerfulness.

“这有点像你的天堂了，”她说，尽力愉快起来。

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He did not know what they were worth, and he lost his cheerfulness.

他不知道它们值多少钱，为这失去了往日的欢乐。

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Life and cheerfulness gleamed there ， and busy industry plied its work.

工作室里充满了活力和欢欣，里面一片忙碌。

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She then gladly takes her share in anything that brought cheerfulness to the young people.

接着她便高高兴兴地去参加各种能给青年人们带来愉快的活动。

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Flowers added a note of cheerfulness to the drab room.

鲜花增加了单调的房间的愉快气氛。

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Cheerfulness is health; its opposite, melancholy, is disease.

欢乐就是健康，忧郁就是病痛。

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Tashi my style, cheerfulness, a higher education and a higher level of writing.

本人作风塌实，开朗热情，具备较高的教育能力和较高的写作水平。

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Cheerfulness is an excellent working quality, imparting great elasticity to the character.

愉快是非常好的工作品质，给人很开朗的心情。

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Health be the condition of wisdom, and the sign of cheerfulness.

健康是智慧的条件，欢乐的标志。

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They worked with great energy and cheerfulness.

他们精力充沛地愉快工作。

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His cheerfulness made everyone feel better.

他的快活感染了每一个人。

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and the cheerfulness of the children added a to his existence.

而那些天真烂漫的孩子也给他的生活增添了乐趣。

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The new compositions frequently lacked the cheerfulness of the classical period.

这种新的作品往往缺乏古典主义时期那种明快感。

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Health is the condition of wisdom and the sign of cheerfulness.

健康是智慧的条件，快乐的表现。

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Cheerfulness is one of his characteristics.

外向是他的特征之一。

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Therefore, it's important to adjust our mood toward cheerfulness.

因此，重要的是要调整我们的心情。

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Show cheerfulness even when you don't feel it.

即使没有感觉到也要表现出自己的愉快心情。

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The characteristic I like best in him is his cheerfulness.

他的愉悦气质是我最喜欢的特点。

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But the variance of medium flow rate may affect the stability of check valve.

但介质流量的变化会给止回阀的稳定性带来影响。

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Designing of bypass control part for check valve

空排止回阀旁路控制部分设计

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