By giving products of assured quality a seal of approval, the system brings uniform quality standards to the market, introduces order, and increases the base of suppliers.

通过对质量有保证的产品盖上审核印章，该系统为市场提供了统一的质量标准，维持了秩序，并增加了供应商数量。

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Never let the water level fall below the base of the tree or the cut end may seal over, preventing further water intake.

不要让水位降到树基以下，或者树干截面以下，否则截面干涸以后，松树就无法充足的吸收水分了。

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11A child waiting at an Air Force base in California for his father -- a SEAL deployed to Afghanistan -- to return home.

一个小孩正在加利福尼亚州的一个空军基地，等待他的父亲——一位还在阿富汗执行任务的海豹突击队队员——回家归来。

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Mr Critchlow said a technical bulletin was issued to gas engineers more than 18 months before the tragedy instructing them to cut off the base of the grill seal with scissors.

BBC: Flavel cooker

But the fightback was snuffed out five minutes from time by scrum-half Genia, who darted over from the base of a ruck to seal victory.

BBC: Australia 30-13 South Africa

McCain rattled through a number of talking points designed to appeal to his Republican base. iReport.com: Did McCain seal the deal?

CNN: McCain: I work for you