If you want to be a draftsman, a machinist, a molder, or a patternmaker, you'll need algebra and geometry and even trigonometry.
如果
想成为手
艺人、缝纫、造型
，需要代数和几何，甚至三角学。
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;;If you want to be a draftsman, a machinist, a molder, or a patternmaker, you'll need algebra and geometry and even trigonometry.
如果想成为手艺人、缝纫、造型，需要代数和几何，甚至三角学。
The machinists only pay lip service to the safety regulations and one day soon there is going to be a nasty accident.
机械
们对安全条例只是口头上表示遵守,总有一天要出大事故的。
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