例如，HILS可以利用互锁装置来确保只有当操作人员与加工机械保持安全距离时，才会执行危险程序。

For example, HILS can use interlocks to ensure dangerous procedures are only executed when personnel are a safe distance from a process unit or machinery.

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但是经过11年的科学研发后，这个问题或许可以解决。一朵机械云可以保持球场的凉爽。

But 11 years of scientific advancements may just bring us the solution: Mechanical clouds that keep stadiums cool.

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耕作还会将土壤中的二氧化碳释放到大气中，而免耕能够保持住土壤中的碳，并且避免机械设备释放吸热气体。

Tilling also releases carbon dioxide from the soil into the atmosphere. No-till keeps carbon in the soil and avoids the release of heat-trapping gases from motorized equipment.

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