"Romantic picnic" is the Engpsh phrase for "浪漫野餐."

A picnic is a meal that is eaten outdoors, usually in a park or on a lawn. The word "picnic" comes from the French word "piquenique," which was a fashionable social event in the 18th century where people brought their own food to eat in the park.

Here are some example sentences using the phrase "romantic picnic":

"My partner and I went on a romantic picnic by the river last weekend." (我和我的伴侣上周末在河边度过了一次浪漫野餐。)
"We packed a basket with sandwiches, fruit, and champagne for our romantic picnic in the woods." (我们为在森林里的浪漫野餐装了一篮三明治、水果和香槟。)
"It was such a beautiful day, we couldn't resist setting up a romantic picnic on the beach." (天气非常好,我们禁不住在海滩上搭建了一个浪漫野餐。)