I've managed to narrow the list down to twenty-three.我已设法把清单上的项目压缩到了23项。And the number of extinctions continues at a high rate in the twenty - first century.灭绝物种的数量在 二十一 世纪仍在以很高的速率上涨.Photographs of the crime scene b...
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...