英语语法分析

For these poorest countries, IDA gives grants and concessionary loans.

对这些最贫困国家，国际开发协会提供赠款和优惠贷款。

Concessionary ticket holders are required to present valid identity documents during admission.

持优惠门票之人士，入场时须出示有效证明文件。

Under a concessionary agreement the company would hold title to the resources that are produced.

在租让制协议下，公司对所开采的资源可以拥有所有权。