1. The crab's chela was strong and sharp, easily cracking open shells.
这只螃蟹的螯很坚固尖锐，轻松地打开了贝壳。

2. The scorpion uses its chela to grab and crush its prey.
蝎子用它的螯抓住并压碎猎物。

3. The lobster's chela is used for catching and holding food.
龙虾的钳子用来抓住和保持食物。

4. The mantis shrimp has powerful chelas that can break glass.
虾蛄有强大的螯，可以破坏玻璃。

5. The hermit crab's chela is used for defense and digging.
寄居蟹的螯用于防御和挖掘。

6. The lobster's chelas are also used for communication and mating rituals.
龙虾的螯还用于沟通和交配仪式。