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...
The bright plumage of many male birds has evolved to attract females.很多雄鸟进化出鲜艳的羽毛是为了吸引雌鸟。The idea evolved from a drawing I discovered in the attic.这种想法是从我在阁楼里发现的一幅画得到启发的。Man was evolved from an ancestor that was probably...
The skin of amphibians is permeable to water.两栖动物的皮肤是透水的。Two amphibians ferry them out over the sands.两辆水陆两用车把他们渡过沙滩.Amphibians live partly in water and partly on land.两栖动物有时生活在水中,有时生活在陆上....
阿姆斯特朗在离目的地还有300米的地方被堵住不能动弹。Armstrong was boxed in with 300 metres to go.检验结果是肺部被厚厚的黏液堵住了。The result is that the lungs clog up with a thick mucus.有几条路被倒下的树堵住了。A number of roads have been blocked by fallen trees....
我们常常举出这样一系列形状不同,然而具有相同光焦度的透镜,作为透镜的配曲调整的例子.One often speaks of this succession of shapes having the same power as exemplifying lens bending.用同样的方法,我们能够求出任意数目的薄透镜的响应.In this same way we could compute the response of any nu...
We remember our mother's stern instructions not to boast.我们谨记母亲不许我们在人前炫耀的严厉教诲。His statement isn't merely an idle boast.他的话不仅仅是虚张声势的自夸。I don't want to boast, but I can actually speak six languages.不是我吹嘘，我确实...
Polly, bewildered and embarrassed, dropped her head and scuffed her feet.波莉既困惑又尴尬，低下头拖着脚走开了。I scuffed the heel of my shoe on the stonework.我的鞋跟儿给铺好的石头磨坏了。Polly dropped her head and scuffed her feet.波莉低下头拖着脚走开了。...
然后那些咖啡豆被磨碎，包装好作为咖啡粉出售。The beans are then ground and packaged for sale as ground coffee.你试用一下过滤咖啡粉怎么样?Do you want to try the percolator grind?特性:自动将水煮沸, 并自动喷淋咖啡粉和过滤.Boil water, spray coffee powder and filter coffee automa...