commitment，encumbrance约定: agree on; appoint; arrange; ...付款: pay a sum of money承诺: promise to undertake; undert ...约束: keep within bounds; restrain ...保留: continue to have; persist; r ...下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:约定付款，承诺，约束，保留数，即可在微信中查询翻译
