法庭批准了他们的婚姻无效申请。

The court granted their request for ___annulment.

他们申请撤销婚姻得到了批准。

Their request for an ___annulment of the marriage was approved.

法院宣布婚姻无效，因为双方未达到法定结婚年龄。

The court issued an ___annulment of the marriage because both parties were under the legal age.