“不充足地”在英语中可以表达为 inadequately、insufficiently 或 not sufficiently，具体使用哪个词取决于语境和表达习惯：
1、 inadequately：
含义：指某事物在数量、质量、能力等方面不够或不足。
例句：The resources were inadequately distributed, leading to shortages in some areas.（资源分配不充足，导致某些地区出现短缺。）
2、 insufficiently：
含义：与“inadequately”相似，表示数量或程度不足。
例句：The evidence presented was insufficiently convincing to change the jury's mind.（所提供的证据不足以令人信服，无法改变陪审团的看法。）
3、 not sufficiently：
含义：直接表达“不充分地”或“不足够地”。
例句：The preparation for the exam was not sufficiently thorough.（考试的准备不够充分。）