不屈不挠
yīngwénjièshì:
  1. n.  constancy
  2. n.  indefatigability
  3. n.  perseverance
  4. v.  persevere
  5. n.  tenacity
  6. n.  bear up under affliction
  7. n.  carry[keep] a stiff upper lip
  8. n.  with great firmness
  9. n.  Indomitable
  10. n.  stand to one's guns
  11. n.  unyielding
  12.   relentlessly
  13.   fortitude indefatigability perseverance persevere tenacity
fǎwénjièshì:
  1. adj.  inflexible et soutenu, inébranlable, tenace