You can tell what the whole leopard looks like when you see one or two stripes of the leopard, and what the sea looks like when you see a drop of water. Metaphor only sees a part or metaphor can infer the whole picture from the observed part.

Make sentences:

1, from the sewage situation of our factory, we can know the great progress made in sewage treatment in China in recent years, so as to get a glimpse of the whole leopard and observe the effect of dripping water to see the sea.

Supplement:

"A glimpse of the whole leopard" comes from the founder of Liu Yiqing's Shi Shuo Xin Yu.