这是平行四边形的对边.These are the opposite sides of the parallelogram.环面可由矩形把其两对对边分别重叠起来而得到.A torus can be obtained from a rectangle by identifying opposite sides.当各块板块彼此分离时, 他们又在对边与其它板块发生碰撞.As the plates move apart, they encount...
May all beings be happy and secure ; may their mind be contented!愿所有的人都幸福安宁，内心满足！Your future in the company is secure.你在公司的前途有保证。Trade discounts may be used as a competitive stratagem to secure customer loyalty.商业折扣可以用作维...
法国各家公司都获利丰厚。The French companies are registering stellar profits.为获利从动物体内提取胰岛素。Insulin is produced commercially from animals.我们不能保证你会获利.We can't undertake that you will make a profit....