Traditionally, robots have been very hard, made of metal and other rigid material.

传统上，机器人很硬，由金属和其他刚性材料制成。

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Please try hard to follow the instructions even if you think they are too rigid.

请切实遵循说明上的指示，即便你认为这些说明的要求过于严格。

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Please try hard to follow the instructions even if you think they are too rigid.

请切实遵循说明上的指示，即便你认为这些说明的要求过于严格。

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