婚礼是令人喜悦的爱情庆典。

A wedding is a joyful celebration of love.

《柯林斯英汉双解大词典》

适时地表达爱情不仅能换回逝去的温情，而且它还是生活的调味剂，让每一天都沉浸在期盼和喜悦中。

Expressing love moderately can not only recall the past romance, but also spice life tastefully, making every day filled with expectation and happiness.

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多巴胺被认为是“快乐激素”，产生喜悦感；去甲肾上腺素类似于肾上腺素，导致心跳加速和兴奋感，据来自美国罗格斯大学的人类学家，著名的爱情研究者Helen Fisher所说，这两种化学物质共同引起喜悦感，充沛的精力，失眠，强烈的愿望，食欲的减退和集中的注意力。

Dopamine is thought to be the "pleasure chemical, " producing a feeling of bliss. Norepinephrine is similar to adrenaline and produces the racing heart and excitement.

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