application for alteration of export permit

例句：

1. 1. We need to apply for an extensionof our export licenses.
   我们需要申请延长我们的出口许可证。
2. 2. The company applied for achange in the export policy.
   该公司申请了出口政策的更改。
3. 3. The application for alterationof export permit has been approved.
   出口许可证变更申请已获批。