英语语法分析

An adult leatherback is twice the size of the biggest cheloniid sea turtles and will therefore take longer to cool off.

成年棱皮龟的体型是最大的海龟的两倍，因此需要更长的时间来冷却。

The leatherback is certainly not the only animal with such an arrangement; gulls have a countercurrent exchange in their legs.

当然并不只是棱皮龟有这种结构，海鸥的腿部也有一个逆流交换系统。

A leatherback may be able to pick up some body heat by basking at the surface; its dark, almost black body color may help it to absorb solar radiation.

棱皮龟可以通过在水面上晒太阳来为身体获取热量；深色近乎黑色的身体颜色可以帮助它吸收太阳辐射。