Over the past decade, one such model, the use of mobile dental service units, has emerged as a practical strategy.
在过去十年里，这样的一个模式，使用流动牙科服务单位，已成为一种切实可行的战略。
Recently, volunteers drove a newly purchased mobile dental clinic to San Jose for yet another free service mission.
最近志工开著刚买的医疗车，前往圣荷西为居民免费看牙。
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