If you aren't willing to be actively involved in the process of learning mathematics, both inside and outside of the class room, then you will have trouble passing any math class.

如果你不管实在教室外还是在教室内都不愿意融入数学学习的进程，你将会在数学上有大麻烦咯。

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Urban people have trouble in going to work or back home and even might be involved in an accident.

市民们在上班和回家的路上有相当大的麻烦，甚至可能会发生车祸。

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It is doubtful, for instance, whether there has been even the most cursory discussion within the government on the issue which caused so much trouble in the Commons the important question of precisely when judges should be involved in orders restricting innocent people's liberties.

ECONOMIST: Bagehot