Given this, crossing that barrier is akin to paying a fixed cost that once it is paid does not have to be paid again.
因此，打破这个障碍就像支付一个固定成本，一旦付款，以后就再也不用付款了。
2
The technical characteristics and economic merit of indoor sound barrier was analyzed according to the design based on the fixed type and movable type barrier.
通过固定式及活动式声屏障的设计，分析了室内声屏障的技术特点和经济效益。
3
The study shows that "fixed function" is a barrier to the creation of environmental value.