求翻译：餐厅之所以能存活这么多年，顾客量大，是因为餐厅不仅一直改进食品，吸引更多的顾客，同时留住老客户，也注重服务水平的提高。是什么意思？

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The restaurant is able to survive so many years, the customers large quantities, because the restaurant is not only a food has been improved, in order to attract more customers and retain existing customers, but also focus on improved service levels.

The dining room the reason that can survive such many years, the customer measures in a big way, is not only because the dining room improves food continuously, attracts more customers, simultaneously detains the old customer, also pays great attention to the service level the enhancement.

Restaurant has survived for so many years, large customers, is because the restaurant is not only improve food, attract more customers, and retaining customers, also focus on the improvement of services.

restaurant is able to survive so many years, the customer is large, because the restaurant has not only improved food to attract more customers and retain existing customers, but also on the increase in the level of. ;