effective cation exchange capacity

例句：

1. 1. The new policy is expected to be effective in reducing pollution.
   预计新政策能有效减少污染。
2. 2. The research has shown that the medicine is effective for treating this disease.
   研究表明这种药对治疗这种疾病有效。
3. 3. The manager's suggestion was very effective in solving the problem.
   经理的建议非常有效地解决了这个问题。