It's possible the insect-eating martins helped to control pests living around Native American camps.

答案可能是这些紫燕捕食昆虫，帮助了美洲土著居民控制营地周围的昆虫数量。

There they were, the longed-for purple martins, sailing gracefully around the bird house, singing as they sailed.

他们就在那里，渴望已久的紫燕，优雅地绕着鸟屋航行，一边航行一边唱歌。

The swallows are the first to return to us; the martins follow: and they always keep the same order.

雨燕最先飞回来；随后是家燕：它们总是以这样的顺序回来。

The purple martin became an unofficial mascot for native inhabitants in the eastern half of the continent.

在大陆的东半侧，北美洲紫燕在当地居民眼中是一种吉祥物。

There are four different species of swallow which visit us-the swift, the chimney swallow, the house martin, and the sand martin.

我们见到的燕子有四种——褐雨燕、烟囱雨燕、家燕和崖沙燕。

His tabard is made of silk velvet and lined with an estimated 100 skins of Pine Martins from Russia.

他的罩袍由丝绒制成，内衬估计含有100张来自俄罗斯的松木马丁斯皮。

I thought you'd still be in london, helping jenny set up at saint martins.

我以为你还在伦敦 帮着Jenny在圣马丁收拾呢。

This special relationship between purple martins and people is one of the few in North America to cross cultural boundaries between native groups and European settlers.

人类与紫燕这样的一种特殊关系仅是北美本土种族和欧洲外来者的文化交融关系之一。

And from London's famed art school, Central Saint Martins, students from different disciplines are generating new sustainable design practices from biological medium.

来自伦敦著名艺术学校中央圣马丁的学生们正在从生物媒介中产生新的可持续设计实践。

There is not a sound in nature so cheering and animating as the song of the purple martin, and none so well calculated to drive away melancholy.

自然界里没有哪种雨燕的歌声如此欢快和容易模仿，没有谁听到这种美妙的歌声还能将忧愁挂在心上。