未来权益 meaning in Chinese

future interests
futures interests

The law of future interests developed in a most gnarled and complicated way
未来权益法的发展形式多样、错综复杂。
There are also all sorts of " future interests " known to the common law
对于英美法还有各种众所周知的“未来权益” 。
But the future event is certain to happen , and thus the future interest can have value and reality now , while my sister is very much alive
但是未来的事件是肯定要发生的，因而未来权益现在是有价值并且现实的，虽然我妹妹还活着。