见效

例句：

1. 1. The new policy is expected to be effective in reducing pollution.
   新政策预计将有效减少污染。
2. 2. The manager's leadership was effective in improving the team's performance.
   经理的领导在提高团队表现方面是有效的。
3. 3. Her new approach was effective in solving the problem.
   她的新方法在解决问题上是有效的。