Recently planetary scientists have suggested that the external preconditions for the development of Earth's biosphere probably included four paramount contingencies.
最近，行星科学家提出，地球生物圈发展的外部先决条件可能包括四个最重要的偶发事件。
2
Mr Netanyahu says he wants to talk—but “without preconditions”.
内塔尼亚胡表示他想要会谈—但无任何前提的会谈。
3
Mr Netanyahu says he wants to talk-but "without preconditions".