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 expansion and contraction of the metal金属的膨胀与收缩a period of rapid economic expansion经济迅猛发展期...
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...