But an exhaustive survey of the tanagers, a family of songbirds from Central and South America, shows no sign of a tradeoff.

但是对来自中美洲和南美洲黄莺家族的唐纳雀进行的一份详细的调查表明，这种鸟类在这两方面表现都很出色。

Polar experts discovered the lake following three years of exhaustive aerial surveys over the sheet, which they peered through using radar and special sensors designed to measure minuscule changes in the Earth's gravity and its magnetic field.

极地专家在对这片湖进行了三年的详尽空中调查后发现了这个湖泊，他们使用雷达和特殊传感器来观察这些湖泊， 这些传感器旨在测量地球重力和磁场的微小变化。