The world is a book, and those who do not travel read only one page.
现在很清楚,杂种形成的种子具有一个或另一个分化特征,其中一半再次发育成杂种形式,而另一半产生的植物保持恒定,并以相等的数量接受显性或隐性特征。
We must balance the urgent need for climate action with the equally urgent need for energy security and economic growth.