深藏不露
be modest about one's skill
feelings that run deep.
深藏不露的感情
Helen is an excellent pianist but she tends to hide her light under a bushel and won't play in public.
海伦是一位出色的钢琴家，但她倾向于深藏不露，不愿在公开场合演奏
Everyone has got two personalities-the one that is shown to the world and the other that is secret and real.
每个人的性格都具有双重性--向外界显示的一面，还有真实却深藏不露的一面