目的：了解未加控制措施干预下农村社区蛔虫感染与传播动态。
AIM: To study the dynamics of Ascaris infection in rural communities where intervention measurements were not introduced.
在石化加工、完成过程中如对泡沫未加控制，容易给生产商造成广泛的问题。
Uncontrolled foaming during petrochemical processing and finishing of products can cause extensive problems for many manufacturers.
阻止不可持续的农业活动、未加控制的毁林活动、破坏性捕捞活动和过度捕捞；
discourage unsustainable agricultural practices, uncontrolled deforestation, destructive fishing practices and overfishing;
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