朴素，简洁，低调，庄重
1. plain, simple, subdued, sober
adjectival nouns or quasi-adjectives (keiyodoshi)
noun (common) (futsuumeishi)
拘谨（行为、态度等），谦逊，安静，不引人注目
2. reserved (behaviour, attitude, etc.), modest, quiet, unobtrusive
adjectival nouns or quasi-adjectives (keiyodoshi)
noun (common) (futsuumeishi)