将“returnable"翻译成中文

Eligibility in theory there is, but, because of other unmentioned provisions, the overall amount of land actually returnable will scarcely be increased, if at all.

理论上存在合格性,但是由于没有提到的其他规定,实际可归还的土地即使有所增加,增加的总面积也微不足道。

and now I had regressed back to a point where there seemed to be no return.

现在我退回到了一个似乎不可返回的点上。