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Their smaller rival is battling to end their duopoly.
比他们小的竞争对手正在为结束他们两家寡头集团而斗争。
Their price depended almost entirely on their scarcity.
他们的价格几乎完全靠他们的`供不应求。
Their friends suggested they should put up their prices.
他们的朋友们建议他们提高价格。