防止蔓延的英文：
1. to prevent ... from spreading
v. 阻止，妨碍；防止
To neutralize a city to prevent bombing.
宣布某城市中立以避免被轰炸。
Prevention is better than cure
预防胜于治疗
This has proved an effective preventive.
这种药证明是很有效的预防剂。
Try to prevent an escalation of the war.
竭力防止战争升级。
These methods prevent pregnancy.
这些方法能防止怀孕。
v. （使）扩散，蔓延；展开；摊开；涂；将…分散；分摊；（使）传播，散布
n. 传播；酱；盛宴；伸展；范围；价差；蔓延；分配；多样；横贯两版的篇幅
spreading of a slick
浮油在水面扩展
orienting spreading
定向铺装
Knowledge of the disaster soon spread.
灾难的消息很快传开了。
A cloth should be spread under.
下面该铺一块布。
The news spread abroad.
那消息四处传播。