FAQs About the word off-the-books

私下的

not reported or recorded

后渠道,秘密的,闭门,隐蔽的,非正式,私有的,隐蔽,偷偷摸摸的,卧底,地下

打开,公开的,公共的,认可的,公开的,直接的,未分类,无限制的,正大光明的,清楚

offsprings => 后代, offshoots => 分支, offscreen => 画外, off-loading => 卸载, off-loaded => 卸掉,