这种外科手术甚至可以用来切除癌性肿瘤。This type of surgery could even be used to extract cancerous growths.他患有肾癌,还有脑部和肺部的继发性肿瘤。He had kidney cancer, with secondary tumours in the brain and lungs.肿瘤学是研究肿瘤的医学分支。Oncology is the branch of medi...
凸轮轴和曲轴协调旋转, 但速度仅是曲轴的一半.The camshaft rotates in phase with the crankshaft, but at half its speed.在发动机里, 机油被供应到旋转在其支承轴内的曲轴和凸轮轴轴颈上.In the engine, oil is supplied to crankshaft and camshaft journals rotating in their support...
Variation among humans is limited to the possible permutations of our genes.人类的变异受限于我们的基因可能存在哪些排列。These permutations multiply towards infinity.这些排列可以增加到无穷大。The possible permutations of x, y and z are xyz, xzy, yxz, yzx, ...