() [] an important customer, usually a company, that does business with another company in many different parts of a country 全国性客户；大客户◆As a national account, your company will receive many benefits and cost savings. 作为大客户，贵公司将会得到许多好处，并可节省费用。
() [, ]the financial records of a country 国民账户；国民核算；国民核算账户◆It will be classed as a private sector company for the purposes of the national accounts. 出於国民核算的目的，它被列为私营公司。◆China's national accounts 中国的国民账户