underproductive
adj. 生产不足的，生产力低下的：产量低于预期或潜在水平的。
例句
If someone is isolated, or hanging out with the wrong crowd (unsupportive or themselves blocked or unsuccessful), I can pretty much guarantee that they will be underproductive.
如果某人被孤立了，或者和错误的人玩到一起（不支持你或者自我阻塞或者不成功），我可以保证他将会变得非常没有效率．
