Typically, an individual source of data is mapped to an MQTT topic, which usually means that each source of sensor information will have its own topic.

通常，会将个人数据来源映射到MQTT主题，这意味着每个传感器的信息来源都有自己的主题。

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Any missions hoping to go farther will need a means of acceleration that can get the spacecraft to the edge of explored space faster—before it has depleted its radioactive power source.

故而，任何更深空的宇宙探索都需要寻找技术途径来加速航天器，以便在放射性能源耗尽之前到达星系边缘。

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Flash memory, which can come in several different technologies, is non-volatile memory, which means that its contents persist after its source of power is removed.

Flash内存(可以通过几种不同的技术实现)是一种非挥发性内存，这意味着断开电源之后其内容仍然保持下来。

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My thanks to both politicians for shedding some light on this disparity, although since none of us would choose to become victims of violence I still wonder whether all such compensation should be exempted from means testing, irrespective of its source.

BBC: Compensation disparity finally explained

Contrary to the claims of know-nothing critics like Bittman, such products are not only environmentally superior to conventional and (especially) organic offerings but would also offer the food industry a proven and practical means of tackling the fungal contamination at its source.

FORBES: Bittman of the 'New York Times': Always Out To Lunch

So the federal government has now invited the provinces to sign a deal to ban, for environmental reasons, the bulk withdrawal of water at its source an attempt at an export ban by other means.

ECONOMIST: Canada��s water