First, the difference of reference objects.

1, spread: spread around like a creeping weed.

2. Diffusion: Spread around or around.

3. Manyan: continuous.

Second, the focus is different:

1, communication: focus on expressing things, and the development of things continues to extend and expand around.

2, communication: focusing on the expression of water or sound will spread in all directions.

3. Manyan: Focus on a continuous state such as mountains, streams and roads.

Third, the differences in citation usage:

1, spread: Southern Dynasties Xie's "Wen Xin Diao Long Zhuzi": "All preach miscellaneous theories, so they enter the stream of Zhuzi."

2. Man: Liu Qing? Chapter 19 of Iron Wall: "In an instant, the same slogan spread."

3. Eyeful: "Biography of Li Jun in Ming Dynasty": "The alchemist presented exquisite books, and the actors performed eyeful plays."

The sentences spread are as follows:

1, because of the strong wind, the fire spread quickly.

We can't let bad habits spread in the class.

A fire broke out in the forest, which spread quickly and must be controlled immediately.

Effective measures should be taken to prevent the spread of infectious diseases.

The fire gradually spread around.

The diffusion sentence is as follows:

(1) infection can spread to the mediastinum cavity, affecting artificial valves or blood vessels, bypass blood vessels and sutures.

(2) I let my thoughts spread, let my sorrow dance, and finally buried myself and aged my heart.

When dark clouds hung over his head, Noah tried his best to win the prize.

Manyan's sentence is as follows:

(1) The effects of spatio-temporal focusing, self-steepness and Raman delay response are further considered.

(2) This system is an ancient volcanic belt, which extends from Manyan, Canada to Texas, now called North America, and began to split up before 1 1 100 million years ago.

(3) In the near future, the company will gradually extend its products to the national market.