So far, renewables account for a small share of its energy supply, although the overall target is a 15% share of total energy by 2020.

尽管到2020年的目标是可再生能源能源占总能源的15%，但是到目前为止，可再生能源只占很小的一部分。

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A still cleaner shift of direction, however, would entail an overall target to limit energy use-and by association set a peak for carbon emissions.

还有一个更绿色的转变，然而，这需要制定一个总体目标——设定一个碳排放上限，以限制能源的使用。

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Since the scheme started in March, Somerset Wildlife Trust (SWT) has so far put up 200 boxes out of its overall target of 365.

BBC: Barn owl at a farm

Because the system would be based on the size of the vehicles, and not force automakers to reach an overall target, overall fuel economy could conceivably worsen if automakers built, and drivers bought, more and more bigger vehicles.

FORBES: The Gas-Guzzler Relief Act

Since those economies together make up around one-third of euro-zone GDP, over the next few years the ECB will achieve its overall inflation target of 2% only if the healthier economies within the single-currency area (above all Germany) accept relatively higher inflation.

ECONOMIST: Germany��s economy