A loft conversion can add considerably to the value of a house.

阁楼改建能大大增加房屋价值。

After new regulations were brought in last year, planning permission must now be sought for the conversion to an impermeable surface of any area around your house bigger than five square metres.

自去年发布新规定之后，房屋四周改建任何五平米以上的非透水地面都要申请设计许可。

The conversion of the tower into a guest house had to overcome considerable difficulties.

将该塔转换成一个酒店必须克服很大的困难。