Construct an animation of the deltoid sliding on two mutually perpendicular lines.建构一动态绘图:展示三角线沿著互相垂直的两轴滚动.Construct two mutually orthogonal tangents of the deltoid. Where do they meet?三角星形线的两条互相垂直的法线的交点在哪里?Construct rot...
I'm sure that yellow lead matched up to that yellow socket.我敢肯定那根黄线接那个黄色插口。Never overload an electrical socket.千万不要使电源插座过载。an aerial socket on the television电视机上的天线插孔...
Someone had coloured in all the black and white pictures.有人给所有的黑白照片都上了色。The hip-hugging black and white polka-dot dress was the height of fashion.黑白圆点花纹的紧身连衣裙当时是最时尚的。A black and white police car cruised past.一辆黑白相间的警车缓慢驶...
Flowerbeds and tubs are banked with summer bedding plants...花坛和花盆里种满了夏令花草。Flowerbeds and tubs are banked with summer bedding plants.花坛和花盆里种满了夏令花草。Tubs planted with wallflowers brightened the area outside the door.桂竹香盆栽为门...