The evidence refutes all claims that the student loan scheme is not working.这份证据驳斥了有关学生贷款计划毫无成效的说法。All diplomatic attempts at a peaceful solution to the crisis have been fruitless.所有试图和平解决这场危机的外交努力都毫无成效。Economic reform will continue to be painful and ineffective.经济改革仍将举步维艰，毫无成效。