Actually, there are some species of bats, the ones that don't use echolocation that do rely on their vision for navigation, but it is true that for many bats, their vision is too weak to count on.

事实上，有一些品种的蝙蝠不使用回声定位，而是依靠视觉来导航，但对很多蝙蝠来说，它们的视觉太弱了，确实不能依靠。

youdao

You cann't count on him, he is not a person you can rely on.

你不能指望他（怎么样），他不是你能依靠的（那个）人。

youdao

Friends know they can count on you to be open with them and they rely on your honesty.

朋友们知道你会坦诚待人，故而也信赖你的诚实。

youdao

The goons frequently count among the very folk we rely on to do the job translators, drivers, guards and sources.

FORBES: Female War Reporters Under Sexual Attack Overseas? All The Time