As part of the summit, hundreds of schools across the country are signing up to the Let's Go Zero activity, aiming to become carbon-zero by 2030.

作为峰会的一部分，全国各地的数百所学校签署了“让我们走向零碳”这一活动，旨在2030年之前实现零碳排放。

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Finally, check whether the global counter reached zero, and if so, invoke the receive activity waiting in the main scope.

最后，检查全局计数器是否已达到零，如果是，调用主范围中等待的接收活动。

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The monthly index registers zero whenever activity in those categories grows in line with historical trend.

该月度指数为零，就说明上述领域的活动增长与历史趋势一致。

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When researchers zero in on electrical activity in yet another area, they can tell which parts of commercial messages, if any, are encoded in the experimental subjects' long-term memories.

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According to a new study by the Centres for Disease Control and Prevention (CDC), which looked at five cities with high numbers of gang murders between the years 2003 and 2008, drug trading or usage and other criminal activity ranged from zero to 25% of all gang-related killings.

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