There is no known single cause for autism, and the debate overpotential causes has ignited a media firestorm.
自闭症的原因尚无定论，关于其潜在原因也在媒体中激烈争论过。
2
The deal was announced in June, but since then Nokia executives are said to have been fretting overpotential hidden liabilities from the bribery scandal.
然而因“贿赂丑闻”所致，自6月计划宣布起，诺基亚主管方面一直忧心于西门子内部潜藏的财政负债。
3
Stocks fell, led by financials such as Bank of America, Wells Fargo and J.P. Morgan Chase, amid worries overpotential regulation and the impact of European debt issues.