She plodded in her perpetuating circle of stove, worktable and sink as if nothing else existed.她只是在炉子 、 工作台和水井这个永恒的小天地里辛勤地劳动,好象其余的一切都不存在似的.Eons passed before life existed on the earth.经过数不清的年代以后, 地球上才有人类。The last paragra...
Viruses tend to be good at surviving when a computer system crashes.计算机病毒在系统崩溃后往往依然存在。This is a new kind of viruses in the computer.这是一种新的电脑病毒.All bacteria are larger than viruses.所有细菌都比病毒大....