接受过急救医护人员的培训，她立刻识别出了心脏骤停的迹象。
Having been trained as a paramedic, she immediately recognized the signs of cardiac arrest.
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having英 /ˈhævɪŋ/|美 /ˈhævɪŋ/
been英 /biːn/|美 /bɪn/
trained英 /treɪnd/|美 /treɪnd/
解释
having been trained 是完成体被动非限定 -ing 分句，作原因状语修饰主句谓语，说明她得以迅速识别病征的背景。
Having been trained as a paramedic, she immediately recognized the signs of cardiac arrest.
having been trained 是完成体被动非限定 -ing 分句，作原因状语修饰主句谓语，说明她得以迅速识别病征的背景。