问题描述：
英语翻译
21 ,market share
Percentage of a market controlled by a certain company or product .
22 ,breakeven analysis
Method of determining the minimum sales volume needed at a certain price to cover all costs .
23 ,variable cost
Cost that changes with the production level ,such as the costs of labor and raw materials .
21 ,market share
Percentage of a market controlled by a certain company or product .
22 ,breakeven analysis
Method of determining the minimum sales volume needed at a certain price to cover all costs .
23 ,variable cost
Cost that changes with the production level ,such as the costs of labor and raw materials .
问题解答：
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