材料费用

• It is further agreed that in order to be entitled to the said payments ( the first one excepted , which is otherwise secured ) , party a or its legal representatives shall , according to the architect ' s appraisement , have expended , in labor and material , the value of the payments already received by party a , on the building , at the time of payment
  订约双方并同意由甲方或其法定代表在领取各项付款时，为证明有权领用上述各次付款（第一次付款除外，因其另有保证） ，必须由建筑师作出评定，证明已经收到的付款之价值已经消耗在劳务及材料费用之中。