Suddenly a train of ideas came across my mind and finally I managed to solve this problem.

突然一连串的想法出现在我的脑海中，最终我成功地解决了这个问题。

youdao

At last, when the king was in quandary, an idea struck his mind suddenly: maybe someone who was familiar with natural environment could tackle this problem.

最后无计可施的国王突然想：也许一个熟悉野外环境的人可能会解决这个问题。

youdao

Suddenly thought of a very serious problem, because never reflect on before, so when this problem in mind, flash-off time, we stubbornly believe that very serious.

忽然想到一个很严重的问题，因为从来不曾细想过，所以当这个问题在脑海里一闪而过的时候，便固执地认为相当严重。

youdao

Earlier this year, the vast market for commercial paper suddenly dried up, but this was not an insurmountable problem for highly rated companies, which could draw down lines of credit, previously arranged with banks, or tap the market for long-term corporate bonds.

ECONOMIST: Signs of a crunch in America's markets for credit