在非洲旅行时，他们经历了许多刺激的冒险。

They had many exciting ___adventures while traveling in Africa.

攀登珠穆朗玛峰是他最冒险的经历之一。

Climbing Mount Everest was one of his greatest ___adventures.

孩子们喜欢听关于太空探险的故事。

Children enjoy hearing ___adventures of space explorations.