It cannot contain any, blank space or comma between digits.它不可以有空格或逗号在数字当中.Not a comma was left out.一个逗号也没漏掉。But the same could be said -- could it not? -- of the humble comma.不过这话用在小小的逗号上, 何尝不是如此?Yet still the comma get...
They will concentrate on teaching the basics of reading, writing and arithmetic.他们将集中教授阅读、写作和算术基础知识。We must concentrate our energies on treating addiction first.我们必须首先集中精力治疗毒瘾。A term in prison will concentrate his mind w...