If the scorpion doesn't move, it won't know it's there. 如果蝎子不动 它就无法感知其位置

293. he can sense the approach of the bat
     他能够通过沙子的振动
294. through vibrations in the sand.
     感知到蝙蝠的靠近
295. Otonycteris must rely entirely on its hearing.
     尖耳蝠则要完全依靠自己的听觉
296. If the scorpion doesn't move, it won't know it's there.
     如果蝎子不动 它就无法感知其位置
297. The battle is on.
     战斗打响了
298. Armed with crushing pincers and a sting loaded with venom,
     凭借强大的双钳和一根毒刺
299. this scorpion is a dangerous opponent.
     这只毒蝎是一个危险的对手

来自《行星地球 第二季 第四集 Planet Earth S02E04 沙漠》第 296 行