adj ~ (for sth/to do sth) not sufficient 不充足的; 不充分的; 不足的; 不够的
*The case was dismissed because of insufficient evidence. 该案因证据不足而撤销.
not enough, or not great enough
Insufficient resources have been devoted to the health service.
His salary was insufficient for their needs.
insufficient (sth) to do sth
The heating is insufficient to kill the bacteria.
At the moment, there's insufficient evidence to arrest anyone.
>insufficiencyn [singular, U]
1. There is insufficient light for reading. 阅读光线不足。