As well as the magazine's "president" in English。这是你原话的翻译。主管:Competent。名词 person in charge 动词 be in charge of/be responsible for。主办:Host。动词 host。协办:Co。社长:Director。
reduces lightness. 这会减少颜色的明度,A tone is produced either by mixing with gray, or by both tinting and shading(a tone色调)是用黑,白或者灰和其他颜色混调。本人不是美术人士,以上图文来自网上进攻参考。