Flying insects begin to glow as they search for mates. 飞虫们开始为寻找伴侣而发光
instead of flying south to warmer climes. 而一直坚守在这里经受着北方寒冬的考验
it's the most energy-saving way of flying. 这是最省力的飞行方式
Receptors in the snake's head pick up the heat given off by the flying bats, 位于头部的“热眼”能觉察到 飞行中的蝙蝠散发出的热量
They can actually sense each bat flying past. 它们实际上能感觉到 每一只飞过的蝙蝠