This is nothing but the binomial expansion.这不过是二项展开式.The memory expansion cards are useful adjuncts to the computer.内存扩充卡是计算机很有用的附件。The vast expansion in secondary education is putting an enormous strain on the system.中等...
We're interested in the source of these fictitious rumours.我们对这些子虚乌有的谣言从何而来很感兴趣。Diplomats can be a notoriously unreliable and misleading source of information.外交官可能会提供一些靠不住的误导性信息，这是众所周知的。Milk products are an excelle...