They hunt at night, and cannot use light to help them find prey and avoid obstacles.

它们在夜间捕食，不能利用光线帮忙找到猎物和躲避障碍物。

youdao

How do they avoid obstacles?

它们是怎样躲避障碍物的？

youdao

Don't avoid obstacles, learn to administer them.

面对阻碍不要逃避，要壆习去面对。

youdao

It also has built in sensors to avoid obstacles, and can operate in a remote controlled mode, as well.

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And when you're all done, you've created a programmable robot that can follow trails, avoid obstacles and react to changes in light.

FORBES

By being programmed simply to move forward toward a target and avoid obstacles, the robot colony finds the fastest way through a network or maze.

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