unexpended balance of encumbrances未: did not; have not开支: pay expenses的: 4次方是 The fourth power of 2 i ...保留: continue to have; persist; r ...数: frequently; repeatedly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:未开支的保留数,即可在微信中查询翻译