EPA also enforces noise standards for trucks and airplanes.环保局对卡车和飞机也规定了噪音标准.He enforces an argument by analogies.他用种种比方来加强论点.The legislative branch enacts laws ; the executive branch enforces them , and the judicial bra...
薪材日益昂贵和稀缺,既买不起又拣不到.Fuelwood is becoming too expensive to buy and too scarce to gather.薪材短缺是毁林后果的最明显和最引人注目的实例.Firewood scarity offers the most visible and dramatic example of deforestation's effects....
A polygon with ten sides is a decagon.十条边的形状叫十边形。The frequency polygon is simpler than its histogram counterpart.频率多边形比直方图更简单.What is the perimeter of this polygon?这个多边形的周长是多少?...
在斯堪的纳维亚神话里,月亮被赋予了男性身份。In Norse mythology the moon is personified as male.半轮月亮躲在淡淡的云彩之后。The half moon is hidden behind some wispy clouds.看看那月亮,它真漂亮,不是吗?Look at that moon. Is that beautiful or what?...