我得到了所有数字后就把它们加起来.When I had all the figures, I cast them up.把这些费用加起来也许要用好几个小时.It may take several hours to figure up these expenses.把这些数字加起来, 总数是100.When you add all the figures together, the sum is 100....
When life gets hard and you want to give up, remember that life is full of ups and downs, and without the downs, the ups would mean nothing.当生活很艰难，你想要放弃的时候，请记住，生活充满了起起落落，如果没有低谷，那站在高处也失去了意义。Why were grown-ups always so st...
John Bardeen was also co-developer of the theory of superconductivity.约翰·巴丁也是超导电性理论的创立者之一。Invention of the point contact transistor by Brattain and Bardeen. ( December 23 ).12月23日, 布拉顿 和巴丁发明点式电视晶体管.Inventors were John Ba...