to-wit为法律专用语，意思是“即”相当于（i.e.)that is to say 

例：Paty A for csierations hreinanfer named cntracts and agrees wihdays next following the datethe Party B that Party A will, within）_______days next following the date hereof, build and finish a______building for Party B ( the building hereinafteris rferred to as the said building) . The said building is of the following dimensions, with reinforced concrete, brick, stones and other materials, asare described in plans and specifications hereto annexed. In consideration ofthe foregoing, party B shall, for itself and its legal representatives, promise topay Party A the sum of_____in manner as follows, towit: ( 甲方基于下文所列各种因素，特与乙方达成了协议并-致同意: 由甲方在订约日期之翌日起___天之内为乙方建造并完成____(涉约建筑)。涉约建筑之规模及所需的钢筋、水泥、 砖块、石子和其他建筑材料之数量，均在作为合同附件的设计图和施工细则中予以说明。基于上述情况，z方及其法定代表郑重承诺向甲方支付____(金额 )。支付方法商定如下: )