What is required to achieve or maintain such viability?要达到或维持这种生存能力需要什么？Scientists are experimenting to find ways to ensure the viability of seeds for even longer periods of time.正如我们所说，科学家正在试验努力寻找让种子的生命力更加延长的方法。These ch...
What is required to achieve or maintain such viability?要达到或维持这种生存能力需要什么？Scientists are experimenting to find ways to ensure the viability of seeds for even longer periods of time.正如我们所说，科学家正在试验努力寻找让种子的生命力更加延长的方法。...a man...
The Atlantic Ocean had undergone changes in temperature and salinity.大西洋海水的温度和盐度已经发生了变化。In many sedimentary basins the salinity of the formation water increases with depth or compaction.在许多沉积盆地中,地层水的含盐量随深度或压实作用而增高.Salini...
Before they were replaced by steamships, sailing vessels like Cutty sark were used to carry tea from China and wool from Australia.大帆船被轮船代替之前, 象卡蒂萨克号这样的大帆船是用来从中国载运茶叶,从澳大利亚载运羊毛的.Australia's rugby union side enjoyed a...