找一个安全的环境。
If you decide to get a body piercing, do a little investigative work about a shop's procedures and find out whether it provides a clean and safe environment for its customers.
如果你决定在某个穿刺店做身体穿刺，请对其做一些调查工作，了解该店的操作流程，弄清楚它是否为顾客提供了一个干净安全的环境。
It will face uncertain environment on the move for autonomous mobile robot. How to find obstacles effectively and the realization of safe obstacle avoidance become a hot research question.
自主式移动机器人在移动的过程中，常会面临无法预测的环境变化，如何有效地发现障碍物并实现安全避障成了一个热点问题。
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