大自然的奥秘是无穷的，人类的探索精神也是无止境的。

Mother Nature's secrets are boundless, just like man's desire to explore new horizons.

youdao

大自然的奥秘是无穷的，人类的探索精神也是无止境的。

Mother Nature's secrets are boundless, just like man's desire to explore new horizons.

youdao