Owing to frequent occurrence of the major oil spill accidents, the international community has established a treaty system controlling pollution from ships and made perfect rules.

在重大溢油事故频发的背景下，国际社会已经逐步建立了一套控制船源污染的条约体系和较为完善的法律规则。

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But taking in newly democratic countries from Central and Eastern Europe has stretched the rules somewhat, since none is treaty-perfect (though that applies to some older hands, too).

ECONOMIST: Europe��s council of correctness

When addressing the CWC's unverifiability, the treaty's supporters often remark that there is no such thing as "perfect" verification.

CENTERFORSECURITYPOLICY: Chemical Reaction

Iraqi Scud attacks, however, clearly debunked the central theses of ABM Treaty devotees, namely that being undefended was better than being defended and that only a "perfect" defense would be acceptable.

CENTERFORSECURITYPOLICY: Hapless SDI damsel in distress: Awaiting a hero