to formally promise to give or do sth 保证；正式承诺；立誓◆Japan has pledged $100 million in aid. 日本已承诺提供 1 亿元援助。◆The CEO pledged that there would be no more job cuts. 首席执行官保证不会再裁员。
() to leave sth valuable with sb to prove that you will pay back money that you owe 抵押；担保◆The shares were pledged to the bank as security for loans. 这些股票作为贷款的担保抵押给了银行。