If the gateway processing a datagram determines that the time to live field in the datagram's IP header is 0, it discards the datagram and notifies the sending host with a time Exceeded Message.

如果处理数据报的网关测定该数据报i p头中的生存时间字段为0，则丢弃该数据报并用超时消息通知源主机。

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Last year, Iraq for the first time exceeded pre-1990 oil production.

CNN: 'Peak oil' doomsayers proved wrong

Each rover was only supposed to operate for 90 days, but both far exceeded that time frame.

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Going to another country, making those arrangements, requirements, would have exceeded that time period, in our view.

WHITEHOUSE: Press Briefing