In the custom of Valentine's day, flowers and chocolates are essential for celebration.

在情人节的习俗中，鲜花和巧克力是庆祝时必不可少的。

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This custom is found in people of all races throughout the world.

这一习俗在全世界各种族中都有。

《牛津词典》

In deference to European custom, the ceilings of these churches were higher than those of the traditional kiva.

为了遵从欧洲的习俗，这些教堂的天花板比传统的地下礼堂的天花板要高。

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Long after the fall of the ancient Egyptian civilization, doctors and alchemists in Europe continued the custom of showing a sign of the gods' help and protection.

VOA: special.2009.03.22

You can also hear Satan's critique of the tyranny of heaven in this account of the rhyme as well. Like kingship, rhyme is a custom.

在这关于押韵的一段话中也可隐约听到,撒旦对上帝独裁的批判，押韵同王权一样都是惯例。

耶鲁公开课 - 弥尔顿课程节选

Both had participated in what David Donald used to call the great American practice or custom, tradition actually he called it, of compromise.

他们都参与了,大卫·唐纳德曾经称为,那场伟大的美国实践或美国习俗,实际上他称之为传统,和解的传统

耶鲁公开课 - 美国内战与重建课程节选

Diamonds have lost some of their magical appeal among younger women in US, where the custom of sealing engagements has slipped since its peak in early 2000s.

FORBES: Diamonds Sparkle For The Next Billion Consumers

Matthew Walzer, a junior at Marjory Stoneman Douglas High School in Parkland, Florida, is one of a handful of people in the world walking around in a pair of custom-made Nike shoes.

FORBES: Dear Nike: I Can't Tie My Shoes

Sorger has plenty of competition in the custom bike market, some of it more affordable than his own offering.

ENGADGET: Engineering a better bicycle with DBC City Bike Design Alt