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...
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...