具有多元文化背景或接受过培训的教师也许能应对这些课程挑战，但这种教师少之又少。

Teachers with a multicultural background or training could perhaps overcome such curriculum challenges, but they're few and far between.

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那些接受过培训的人应该使用传统的CPR。

Those with training were told to use traditional CPR.

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医疗装置的管理者、使用者和维修人员都需要接受适当的专业培训，并且必须对接受过培训的人员较好地保留下来。

Staff managing, using and maintaining medical devices need appropriate professional training and a better retention of the trained staff must be achieved.

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