在对丰田汽车公司(Toyota Motor Corp。)所产汽车的安全问题进行了五个月的调查之后，美国安全官员尚未确定除该公司自己报告的问题之外，这些汽车还存在哪些新的缺陷。

Five months into an investigation of safety issues involving Toyota Motor Corp. vehicles, U. S. safety officials have yet to identify any new defects beyond those reported by the car maker itself.

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