的;His classmates were labouring with elementary algebra.
他的同学们正在绞尽脑汁地演算初等代数题。
His classmates were labouring with elementary algebra.
他的同学们正在绞尽脑汁地演算初等代数题。
The labouring people tried their best to dam the river.
劳动人民尽最大努力筑堤防洪。
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