But birds don't have 'em, nor do reptiles or fish.

但是鸟类没有血小板，爬行动物和鱼类也没有。

youdao

But birds have an extra cone for seeing violet and ultraviolet light.

但是鸟类多了一种锥体，能识别紫色光和紫外线。

youdao

Things like iPods you just have to knock off the list, but birds in the trees around my kitchen have become my new iPod.

像iPod这类东西，我直接从清单上划去，不过，在我厨房四周林间的鸟儿成了我新的iPod。

youdao

But birds or the wind can reintroduce them to the land.

VOA: special.2011.07.26

Birds of a feather may flock together but opposites don't really attract each other.

人以群分,反差太大，不容易吸引对方。

耶鲁公开课 - 心理学导论课程节选

But we have many all and kind of common birds.

但是我们有很多不同类的相似的鸟。

喜欢鸟 - SpeakingMax英语口语达人

But birds had flight figured out a long time ago.

FORBES: 5 Gamification Rules from the Grandfather of Gamification

But the birds were slaughtered, it seems, at an abattoir where poultry from the affected zone were also killed.

ECONOMIST: Avian flu

The cause of the substance has not been identified, but the birds are believed to have been covered in the same substance that affected hundreds earlier in the year.

BBC: Dead bird on beach between Downderry and Seaton