燕鸥 tern ; Common Tern ; Sternidae ; Chlidonias
北极燕鸥 Arctic Tern ; Sterna paradisaea ; Arctic tern -Sterna paradisaea ; paradisaea
燕鸥属 Sterna
乌燕鸥 Sterna fuscata ; Onychoprion fuscata ; fuscata
白额燕鸥 Little Tern ; Sterna albifrons ; Little Tern Sterna albifrons ; Sternula antillarum
普通燕鸥 Common Tern ; Sterna hirundo ; Common Tern Sterna hirundo
褐翅燕鸥 Bridled Tern ; Sterna anaethetus ; Onychoprion anaethetus ; Bridled Tern Sterna anaethetus
黑枕燕鸥 Black-naped Tern ; Sterna sumatrana ; Black-naped Tern Sterna sumatrana ; sumatrana
大凤头燕鸥 Thalasseus bergii ; Sterna bergii ; Great Crested Tern Sterna bergii
黑腹燕鸥 Sterna acuticauda ; Whiskered Tern ; Black-bellied Tern Sterna acuticauda
当他们让一只燕鸥或鹈鹕扔下一条鱼时，他们会一头栽到水里，然后把鱼从水面抓起来，这可能就是这只鸟被油弄脏的原因。
When they get a tern or pelican to drop a fish, they plunge down and grab it off the surface of the water, which may have been how this bird got oiled.
北极燕鸥之所以能不受这一分神因素影响，是因为那时它被一种本能感觉所驱动着，这种本能令人类十分钦佩，它叫做：“更远大的目标”。
The arctic tern resists distraction because it is driven at that moment by an instinctive sense of something we humans find admirable: larger purpose.
北极燕鸥在从南美洲的最南端飞往北极圈的路线全长2万公里，但燕鸥这一路上都不会留意观鸟船送来的散发臭味却又可口的鲱鱼。
An arctic tern, on its 20,000 km flight from the extreme south of South America to the Arctic circle, will take no notice of a nice smelly herring offered from a bird-watcher's boat along the way.
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