questions existed的用法和樣例：
例句
- The group found questions about the fairness of the sentencing.
這個(gè)委員會(huì )發(fā)現，判刑的公正性存在問(wèn)題。 - But there are still questions about Culpepper's mobility after he missed most of last season due to lingering problems in his right knee.
但他因為右膝的老傷缺席了上賽季的大部分比賽，在身體靈活性上還存在問(wèn)題。
