Wild waterfowl are considered the natural reservoir of all influenza A viruses.野生水鸟是A型流感病毒的天然宿主.Computer systems throughout the country are being affected by a series of mysterious rogue programs, known as viruses...全国的计...
More human remains have been unearthed in the north.北部又挖掘出了更多的人体遗骸。More human remains have been unearthed in the north of the country.在该国北部挖出了更多的人类遗骨。From somewhere, he had unearthed a black silk suit.他不知从哪里找来了一套黑色的丝绸衣服。...