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States are rational actors that seek to maximize their relative power in order to ensure their survival in a competitive international system.

旅程最好用朋友來衡量，而不是用英里。

The wound is the place where the Light enters you.

在備戰(zhàn)時，我總是發(fā)現(xiàn)計劃是無用的，但規(guī)劃是不可或缺的。

積極心理學不僅僅是感覺良好，而是關(guān)于美好的生活。