The dinitrobenzene with electron-withdrawing group can be hydrogenated much easier than the dinitrobenzene with electron-donating group.

含有吸电子基团的二硝基苯类化合物反应活性明显高于含有供电子基的二硝基化合物的加氢反应；

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The electron withdrawing group (F) being introduced into the alkyl groups of then-hexyl ZDDP is able to strengthen chemical adsorption between ZDDP and Fe atoms.

在伯烷基上吸电子基团能增强硫原子与铁原子之间的化学吸附作用力。

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“We are starting to witness signs that corporates are withdrawing deposits from banks in Spain, Italy, France and Belgium, ” an anlayst at Citi Group wrote in a recent report.

花旗集团的一位分析师在最近一份报告中这样写道：“我们开始注意到各家公司正将其存款从西班牙、意大利、法国和比利时抽离的迹象。

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Stung by the emerging fear of an early exit, Spain coach del Bosque reverted to the tactics that had drawn widespread criticism in the opening group game with Italy, withdrawing striker Fernando Torres and bringing on winger Navas.

CNN: Late Navas goal sends Spain through with Italy

By withdrawing ARI it is hoped the EU working group will be more likely to view the island's current tax regime favourably.

BBC: Hundreds of government posts cut in Isle of Man budget

The group embarrassed the Congolese government by briefly seizing the key eastern city of Goma late last year, before withdrawing to positions outside the city.

CNN: South African police seize alleged Congo coup plotters