商务英语BEC中级词汇 The firm has contracted to build a double-purpose bridge across the river.他们公司已签约承建一座横跨大江的两用大桥。Under the contract the building work must be completed within eighteen months.按照合同，该建筑工程必须在18个月之内完工。contractor n. 承办商，承建人短语general contractor 总承包
