我担心你要付高昂的滞港费 用英语怎么表达?急!

I am afraid that you have to pay high demurrage charges.这个是对的，

I am afraid that you have to pay a hign charge for keeping your goods in the port.

或者:I am afraid that you must pay an expensive cost for late fee.

I am afraid that you have to pay high demurrage charges.

I worried you must pay soaring stagnate the port expense