人类的存在是宇宙中一个伟大的奇迹。

The ___being of human life is a great miracle in the universe.

科学家们正在探索深海中的未知生物。

Scientists are exploring unknown ___beings in the deep sea.

冥想帮助他更深入地理解自己的存在本质。

Meditation helps him understand the true nature of his ___being.