But unused land in Singapore is hard to come by.

但在新加坡，闲置土地很难获得。

It said there are important benefits to turning unused land into sources of healthy food.

它说将未使用的土地变成健康食品的来源有重要的好处。

It was a piece of unused land where the dogs had gone in under the fence and they had taken over.

这是一块未使用的土地，狗已经从篱笆下钻了进去，并接管了这里。