It requires a special kind of nest, made by a particular species of swiftlet, a tropical bird mostly found in Southeast Asia.
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.
这要求一种特殊的燕窝，是由一种特殊的金丝燕做的，这种金丝燕大部分被发现于东南亚。
It requires a special kind of nest, made by a particular species of swiftlet, a tropical bird mostly found in Southeast Asia.
制作燕窝需要用到一种在东南亚常见的种类独特的热带雨燕的鸟窝。
新加坡也有燕房！
Swiftlet populations have fallen steeply in some regions, prompting conservation officials to look for ways to protect the species.
在一些地区，金丝燕数量已经急剧减少，动物保护官员不得不想方设法来保护它们。
Swiftlet populations have fallen steeply in some regions, prompting conservation officials to look for ways to protect the species.
在一些地区，金丝燕数量已经急剧减少，动物保护官员不得不想方设法来保护它们。
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