Early settlers built frames of spruce, maple and pine.早期的定居者用云杉木、枫木和松木建造屋架。It was made of soft lumber, spruce by the look of it.其制作材料是软木，看起来像是云杉。He looked spruce in his best clothes.他穿了最漂亮的衣裳,看来很神气....
The ethics of his profession don't permit him to do that.他的职业道德不允许他那样做.Throughout the book we have addressed ourselves to the problem of ethics.整本书中我们都在探讨伦理观的问题。Personal ethics and professional ethics sometimes conf...
The necessary consequence of this was political centralisation.由此必然产生的结果就是政治的集中.The increasing centralisation of power is also disturbing.集权程度更甚亦令人不安....
本文研究了一种新型行星传动 —— 滚锥齿超环面行星蜗杆传动.The paper researches a new type mechanical transmission mechanism - the Rolling cone - type toroidal drive.'环'.''面,环形圆纹曲面圆圈形成的超''.'环'.''面; 具...