Romantic Poems from Boat to River Center

"It's too late for a ship to break down in the middle of a river, but it's too late to pull back from the cliff" means that an object has the property of keeping its original state of motion unchanged, which is inertia;

In "Orchid grows with five grains and brook grows with bamboo", "Orchid grows with five grains and brook grows with bamboo" shows that molecules are constantly moving irregularly, while "Bamboo grows with bamboo and brook grows with bamboo" is the reflection of bamboo in water, which is a reflection phenomenon of light.

So the answer is: inertia; Thermal motion of molecules (reflection of light, etc.) )