屋顶的两面斜面都有破瓦片.On both slopes of the roof there are broken tiles.伽利略让小金属球从斜面滚下.Galileo rolled small metal balls down the incline.图3.21画出了平行于斜面的、相互保持平衡的几个力.Figure 3.21 shows the forces parallel to the plane that are respons...
Pack the fruits and nuts into the jars and cover with brandy.把水果和坚果放进罐子里，用白兰地酒浸泡。They had a few jars together.他们一起喝了几杯。Machines now exist to pack olives in jars.现在可用机器将橄榄装进罐子里。...