During these times, however, it is hypothesized that a moon of Saturn named titan could achieve surface temperatures warm enough to support life.

然而，在这段时间里，据推测，土星的一颗卫星泰坦的表面温度足以维持生命存在。

The function of these tail veins is unclear, but it is hypothesized that they acted as in flight rudders or stabilizers, and might have been used in courtship displays.

这些尾静脉的功能尚不清楚，但据推测它们在飞行中充当方向舵或稳定器，并且可能用于求偶展示。