在指南针发明之前，水手们必须依靠星星来确定方向。
Before it was invented, sailors had to depend on the stars to find direction.
在森林中没有指南针是容易迷失方向的。
Without a compass, it is easy to lose one's bearings in the woods.
一次金融危机不应当使世界的道德指南针指向另一方向。
A financial crisis should not make the world's moral compass point in another direction.
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