V-ERG
（使）減小;（使）減弱;（使）降低
When something diminishes, or when something diminishes it, it becomes reduced in size, importance, or intensity.
例句
The threat of nuclear war has diminished...
核戰(zhàn)爭的威脅已經(jīng)減小了。
Federalism is intended to diminish the power of the central state...
聯(lián)邦制旨在削弱中央政府的權(quán)力。