effective /ɪ'fektɪv/ adj. 产生预期结果的；有效的:

击收听音频跟读 ↓↓↓ ↓↓↓ ↓↓↓

例句/词组:

Long prison sentences can be a very effective deterrent /dɪ'ter(ə)nt/

for offenders.

判处长期徒刑可对违法者起到强有力的威慑作用。

英语解释：

producing the result that is wanted or intended; producing a successful result 产生预期结果的；有效的: