繁重

fánzhòng
  1. heavy
  2. burdensome
  3. heavy-duty
  4. arduous
  5. onerous

CEDICT

Entry Composition

=1 繁 fán old variant of 繁 fán
=1 繁 fán
  1. complicated
  2. many
  3. in great numbers
  4. abbr. for 繁體 fántǐ, traditional form of Chinese characters
2 重 zhòng
  1. heavy
  2. serious
  3. to attach importance to