laboured

• The wheels laboured in the sand .
  车轮在沙中空转（无法前进）。
• The ship laboured in the heavy seas .
  船在大海中吃力地前进。
• Products of labour are transformed into commodities ...
  劳动产品转化为商品。
• Do not let your mountain in labour bring forth a mouse .
  你不要弄得事倍功半。
• Labour is often the father of pleasure .
  勤劳常是快乐之父。
• She often does volunteer labour during holidays ..
  放假时她常去参加义务劳动。
• She occupied herself in the morning with literary labour .
  上午她埋头文学写作。
• It is labour that creates the world .
  是劳动创造了世界。
• He spends the summer labouring on a building site .
  他整个夏天都在建筑工地劳动。
• Products of individual labour are turned into commodities .
  劳动产品转化为商品。