The system has been in operation for six months.

这个系统已经运行六个月了。

《牛津词典》

As shown in Listing 9, the system has been up for only nine days.

如清单9中所示，这个系统才启动了9天。

youdao

The system has been demonstrated to a number of authorities worldwide.

目前，该公司已对全球诸多官方机构演示了该系统。

youdao

Yet,in some ways,the system has been a victim of its own success.

VOA: special.2010.01.11

Sure, voter turnout has been dropping, and it might appear that voters are apathetic about the political system.

是啊，现在参与投票的人越来越少，看起来投票人对政治体系相当冷漠。

对于义务投票制 - SpeakingMax英语口语达人

After six Eurostar trains broke down in or near the tunnel that runs under the English Channel, the system has been suspended while engineers troubleshoot the electrical problems thought to have been brought on by condensation.

VOA: standard.2009.12.21

But much of the system has been perverted into the opposite of what Hiram Johnson intended.

ECONOMIST: California

Monday's test was conducted alongside US forces and is the first time the system has been tested.

BBC: Israel successfully tests Arrow 3 missile interceptor

The system has been in operation for more than two years in a slum in Santiago, Chile.

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