Scientists are beginning to gain a better understanding of the vulnerabilities of certain species, disease transmission routes, and ways to prevent diseaseproblems from occurring.
科学家正着手行动,以更好地了解物种脆弱性,疾病传播路径,以及从源头预防疾病发生的方法。
3
However production is in decline in many regions as a result of pest and diseaseproblems that cannot be managed due to the high cost of pesticides and their negative environmental effects.