She burned the letters so that her husband would never read them.
她把那些信都烧了以便永远不让她丈夫看见。
The boys dug pits and baited them so that they could spear their prey.
男孩子们挖了陷阱，在里面放上诱饵，以便用矛刺杀猎物。
I studied Italian so that I would be able to read Dante in the original.
我学习意大利语以便能读但丁的原著。
We perfected a hand-signal system so that he could keep me informed of hazards.
我们完善了一套手语体系，以便他能告知我危险。