打电话叫有职业资格证的水管工人来修就意味着一笔昂贵的小时费，但是，管道工程的科学其实是很直观的，而且大多数问题的解决办法都比你想象的简单。
A call to a licensed plumber can mean an expensive hourly fee, but the science of plumbing is fairly straightforward, and most problems are simpler to solve than you might think.
行业技师证（Meisterbrief）是最高等级的职业资格证书，它不仅是一枚证明技能的徽章，而且在一些行业还能起到让对手望风披靡的作用。
Meisterbrief, the highest vocational credential, is not just a badge of competence but in some trades a keep-off sign to competitors.
行业技师证（Meisterbrief）是最高等级的职业资格证书，它不仅是一枚证明技能的徽章，而且在一些行业还能起到让对手望风披靡的作用。
Meisterbrief, the highest vocational credential, is not just a badge of competence but in some trades a keep-off sign to competitors.
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