unostentatious

1. He industriously engages in unostentatious hard work.
   他勤勤恳恳，埋头苦干。
2. Executives themselves often forego the armored car, he says, preferring to hail a cab& unostentatious, anonymous, more secure.
   他说，高管们自己通常不会乘坐配有武器的车，而是打出租车，这样显得低调，不引人注目，而且更安全。

adj

1. not ostentatious
   1. his unostentatious office
   2. unostentatious elegance

   Synonym:    unpretentiousunpretending

2. exhibiting restrained good taste
   1. the room is pleasant and understated

   Synonym:    understatedunpretentious