他断言，这道光束是一道“看不见的银河生命线”，连接着人类、地球、太阳和银心。
The beam, he asserted, operates as "invisible galactic life threads" that link people, the planet, the Sun, and the center of the Galaxy.
在这种极端的世界，不仅揭示喜马拉雅山积雪皑皑的群山和迷人的动物，但也为人类重要的生命线。
In this world of extremes, the Himalayas reveal not only snow-capped mountains and fascinating animals but also a vital lifeline for humanity.
水是人类生存的基本条件，又是国民经济的生命线。
Water is primary condition of the human survival and lifeline of the national economy.
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