食用燕窝是金丝燕的巢纯粹的唾液分泌。

Edible bird's nest is the nest made purely of swiftlet's saliva secretion.

燕窝来自一种特殊的燕子，叫作金丝燕，是一种热带鸟类，主要分布在东南亚地区。

It requires a special kind of nest, made by a particular species of swiftlet, a tropical bird mostly found in Southeast Asia.

我们在这说的燕窝是由多种雨燕生产出来的，尤其是金丝燕在做巢时会排放一种化学混合物，使空气变冷。

The nests in question here are produced by a variety of Swifts, specifically Cave Swifts who produce the nest by spitting a chemical compound that hardens in the air.

燕窝为金丝燕吞食海中小鱼或其他蚕螺海藻等小生物后，用吐出的唾液凝结而成的燕窝巢。

Having eaten tiny fish, insects and Marine algae, swiftlets spit out their saliva to make nests which become edible after they have been cleaned and processed manually.