It may seem clear-cut which you're experiencing, but a mild shift in how you view things can actually help you go from feeling trapped and overwhelmed to feeling invigorated and vital.

你经历的事情是明明白白放在那里的，但是把你看待这些事情的角度做个温和的转变就能帮你从挫折和困境中解脱出来，让你感觉精神抖擞、充满活力。

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Prof Robert Modlin, a dermatology and microbiology expert at the University of California, Los Angeles, said the study raises the possibility that a decrease or increase of one of these two proteins could shift the balance from mild to more serious disease.

BBC: 'Wrong' immune response aids TB