He said he had tried to quit several times but always failed.
他说他多次尽力戒烟，但屡屡告败。
Failed states always cause misery, but only sometimes are they a global threat.
失败的国家总会带来不幸，然而这些国家只有在某些时候才会产生世界范围的威胁。
Failed states always cause misery, but only sometimes are they a global threat.
失败的国家总会带来不幸，然而这些国家只有在某些时候才会产生世界范围的威胁。
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