effective thermal cross-section

例句：

1. 1. The new policy is expected to be effective in reducing pollution.
   预计这项新政策能有效减少污染。
2. 2. The manager's decision was effective in improving the company's performance.
   经理的决定有效提高了公司的业绩。
3. 3. The new software is effective at handling large amounts of data.
   这款软件在处理大量数据时非常有效。