Each tentacle has about 5, 000 stinging cells, which are triggered not by touch but by the presence of a chemical on the outer layer of its prey.
每条触手大约有5000个刺细胞，这些细胞的触发不是由于触摸，而是由于猎物的外层化学物质。
Often does he warn us not to touch the poisonous chemical.
他常告诫我们不要触动有毒的化学品。
Take the chemical goods protection measures, it could not touch skin and eyes.
应遵循所有处理化学品时的防护措施，特别是避免眼睛和皮肤接触。
Take the chemical goods protection measures, it could not touch skin and eyes.
应遵循所有处理化学品时的防护措施，特别是避免眼睛和皮肤接触。
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