过去，环保科学家运行测试以检查螃蟹的疾病或其他的生理问题，结果两手空空。
In the past, environmental scientists ran tests to check for disease or other physiological problems with the crabs, coming up empty-handed.
我的手是个螃蟹，它正慢慢地爬向你。
她也可以使用一个螃蟹状钳手形握物体。
She could also grip objects using a crab-like pincer hand shape.
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