腐烂的英文：
become rotten
become gangrenous
erosion

参考例句：

To cause to rot.
使腐烂使发生腐烂

Rot has set in.
开始腐烂。

The rafters that jut out rot first.
出头的椽子先腐烂。

A reek of rotten onions
腐烂洋葱的恶臭

Pulled the tainted meat product from the stores.
把腐烂的肉从店里搬走。

Salt preserves food from decay.
盐能防止食物腐烂。

Warmer weather meant the decomposition of the corpse
天气变暖会使蛇的尸体腐烂。

He had to toss those rotten apples away.
他不得不把腐烂的苹果扔掉。

They were experts at preserving the bodies of the dead by embalming them with special lotions
他们具有采用特种药物洗剂防止尸体腐烂的专门知识。

They believe that the humic materials are leached from decaying plant materials.
他们认为腐植物料是从腐烂的植物体浸沥而来。

become是什么意思：
v. 成为；变得；适合；相称

To become blunt.
变钝，变迟钝

To become inflated.
膨胀变得充了气的。

To become firm or gelatinous; congeal.
凝固凝结或变硬；冻结

rotten是什么意思：
adj. 腐烂的；恶臭的；堕落的；虚弱的；极坏的
adv. 非常

That was a rotten trick!
那样做太轻率了！

Early ripe, early rotten.
早熟早烂(早慧早衰)。

This pear is rotten at the core.
这个梨子的果心腐烂了。

gangrenous是什么意思：
a. 坏疽的,脱疽的,腐败的

Disease continue to develop, there will be one or more of a gangrenous toe, secondary infection resulting moist gangrene.
病变继续发展，可出现一个或多个足趾的坏疽，继发感染后形成湿性坏疽。

An unusual strain of Bacillus isolated from a patient with multiple bacterial synergistic gangrene.
从一例多细菌协同性坏疽的标本中分离到罕见芽孢杆菌。

If a man had a gangrenous foot would you have patience with anyone who hesitated to amputate it?
如果一个人的脚得了坏疽而有人对于动截肢手术犹犹豫豫，你难道会对他有耐心吗？