In birds the second finger is the principal strut of the wing, which consists primarily of feathers.
鸟类的第二根手指是翅膀的主要支柱，翅膀主要由羽毛组成。
Examine the wings, nacelles, and upper and lower nacelle strut-to-wing fairing for fuel or other fluid leaks.
检查机翼，短舱，机身到机翼的整流装置，上下短舱有无燃油或其他液体渗漏。
Examine the wings, nacelles, and upper and lower nacelle strut-to-wing fairing for fuel or other fluid leaks.
检查机翼，短舱，机身到机翼的整流装置，上下短舱有无燃油或其他液体渗漏。
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