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汉语拼音：kuò sàn

1.扩大散布：癌细胞已经～。此消息不得向外～。

2.物质的分子（或原子）由于热运动，不断向四周分散的现象。固、液、气各态物质均有扩散性质。气态物质扩散最快。

1. 扩大散布。

   茅盾 《子夜》九：“一股热气渐渐从她胸腔里扩散开来，她的脸有点红了。” 巴金 《随想录》五：“癌细胞已经扩散，肠癌变成了肝癌。”

• Even if it takes a while to make it to the East Coast, the beetle's spread through the boreal forest can cause its own problems.

  Carroll还说，尽管扩散到东海岸还需要一些时间，但甲虫通过北部针叶林带的扩散本身就会产生一些问题。

• the energy market, the supply crisis is not like a baton, like the past few days has been spread to the hands of Russia.

  能源市场，供应危机并不像接力棒一样，过去数天已扩散到俄罗斯的手中。

• The utility planned additional sampling to see how widely the radioactive substances have spread, he said.

  他说，该公司计划进行更多的取样，以便了解放射性物质扩散到了多大的区域。

• Mr Putin said the INF treaty was no longer in its interests because of proliferation of short and medium-range missiles.

  普京表示，鉴于中短程导弹的扩散，《中导条约》已不再符合俄罗斯的利益。

• Our air diffusion bubbles lower the density of this heavier and warmer water which causes it to rise to the surface.

  我们的气泡扩散技术使这种较暖较重的水的密度降低，从而使其上升至水面。

• Orchiectomy has been used for years to slow or stop the growth and spread of prostate cancer.

  睾丸切除术，用来治疗前列腺癌的生长及扩散已经有很多年了。

• If it remains unchecked, this enzyme degrades and modifies surrounding tissues, facilitating the spread of cancer through the body.

  如果不采取进一步的措施，这种酶就会降解并修饰肿瘤细胞周围的组织，从而为肿瘤细胞向身体各处扩散铺路。

• It was spreading quickly to all her bones, and the surgeon had removed one of her ribs during the surgical removal of her right breast.

  10月，母亲的乳腺癌确诊了，并且迅速扩散倒骨头里，医生在割掉她的右乳的时候移除了一根肋骨。

• No one has ever before documented the spread of a learned behavior through a population of these marine mammals over a short period of time.

  从前没有人记录过这种海洋哺乳动物的学习行为短时间内在种群中扩散的现象。