... aim at doing 针对，瞄准 appreciate doing 感激做…… at pains of doing 尽力..., 努力.. ...
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at pains of doing
煞费苦心做某事
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The former cabinet minister was at pains to praise the large numbers of journalists "not least in the local and regional press, who are doing an honest job without any great reward".
BBC: Press regulation poses a real danger, says Patten
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