n.(适合个人性格,能力等的)适当地位；【生】小生境；壁龛；【地】雪凹网络小生境技术；小生镜；利机变形：复数：niches现在分词：niching过去分词：niched英英释义： niche[ ni:ʃ, nitʃ ]n.a position particularly well suited to the person who occupies it"he found his niche in the academic world"a small concavity同义词：recessrecessionc