advance upon 详细解释

advance uponadvance upon1.向(某地)推进〔进逼〕, 向(某人)发起进攻There were unconfirmed reports that the rebel army was advancing upon the town.据未经证实的报告说, 叛军正向市区推进。The two men advanced upon each other with drawn revolver.这两人都拔出了手枪, 一步步相互逼近。