- but the snakes have a secret weapon.
不过蛇也有自己的秘密武器 - 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 - 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 - as this thermal image shows.
正如这幅热影像所示 - To the snakes the bats are apparently glowing
每一只蝙蝠在蛇“眼”前都是活灵活现 - and this gives them something to aim at.
这也给了它们瞄准目标的机会 - This is the price that these cave commuters must pay
这是洞栖动物必须付出的代价
as this thermal image shows. 正如这幅热影像所示
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