laboriously russian

• тя́жко

  heavily, with difficulty, laboriously

  painfully, agonizingly, hard (emotionally)

• натужно

  with difficulty, strenuously, with effort, laboriously

• надсадно

  strainingly, laboriously, with a great effort, with a strain

• трудоёмко

  labor-intensively, laboriously, with great effort, tediously

Examples

• Он натужно поднял тяжёлый мешок с земли.

  He laboriously lifted the heavy sack off the ground.

• Писатель вымучивал новую главу романа неделями.

  The writer spent weeks laboriously working on a new chapter of the novel.

• Я видел коня, тяжело переступающего по грязи.

  I saw a horse laboriously picking its way through the mud.