Modifier + 势力
The noun 势力 (shìlì) means "power," "influence," or "force," typically referring to a group's sphere of control or dominance. It often carries a slightly negative connotation, implying aggressive or oppressive influence, as in 黑势力 (dark forces, organized crime).
那个地区的黑势力已经被警方打掉了。
nàge dìqū de hēi shìlì yǐjīng bèi jǐngfāng dǎ diào le.
The criminal forces in that area have already been taken down by the police.
各方势力都在争夺这块市场。
gè fāng shìlì dōu zài zhēngduó zhè kuài shìchǎng.
Various forces are competing for this market.
他在公司的势力越来越大,没人敢反对他。
tā zài gōngsī de shìlì yuè lái yuè dà, méi rén gǎn fǎnduì tā.
His power within the company is growing, and no one dares to oppose him.