You have to do everything you can. You have to work your hardest. And if you do, if you stay positive, then you have a shot at a silver lining.你必须全力以赴，最大限度地去努力。如果你这么做，并且保持乐观，你就会看见乌云背后的幸福线。It was just then that I chanced ...
...an outbreak of equine influenza.马流感爆发The last attack of influenza has left me rather groggy.上次患流行性感冒后使我至今软弱无力.pandemic influenza.流感Influenza is an infectious disease.流感是一种传染病。They took steps to prevent the spread of i...