Very little seems to have been done by these companies in the interest of sound quality for several years… possibly even decades.
一点非常好似由这些公司在品质优良的兴趣可能做几个几年… 甚而十年。
During the last two decades, several new devices have come on to the market and more affordable prices for these have led to their increasing popularity in veterinary anaesthesia.
在过去的20年间，多种新的设备进入市场，以及可承受的价格使其在兽医麻醉中的应用增加。
During the last two decades, several new devices have come on to the market and more affordable prices for these have led to their increasing popularity in veterinary anaesthesia.
在过去的20年间，多种新的设备进入市场，以及可承受的价格使其在兽医麻醉中的应用增加。
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