1. The engine was labouring. 
   引擎艰难地运转着。
2. agricultural producing period and labouring period 
   农业生产时间和劳动时间
3. The woman was labouring with child. 
   这位妇女正处于临产阵痛之中。
4. She has been labouring to sing well. 
   她一直在努力地唱好。
5. Cities grew rapidly, a large labouring class developed. 
   城市迅速兴起，庞大的工人阶级也发展了起来。

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