

医学英语科普文章2
致命的军团杆菌
legionnaires' disease is a serious and sometimes fatal form of pneumonia. legionnaires' disease is caused by infection with legionella bacteria which are found naturally in the environment and thrive in warm water and warm damp places. man-made water systems sometimes provide environments that let legionella bacteria increase to large numbers. these man-made systems include showers, spa pools, fountains, and air conditioning cooling towers. people usually get legionnaires' disease by breathing in mists that come from a water source contaminated with legionella bacteria.
an estimated 8,000 to 18,000 people get legionnaires' disease in the united states each year. some people can be infected with legionella bacteria and have mild symptoms or no illness at all. patients with legionnaires' disease usually have fever, cp>
A contented mind is the greatest blessing a man can enjoy in this world.
知足是人生在世最大的幸事。
-Joseph Addison(美国作家艾迪生) If you would know the value of money, go and try to borrow some.
要想知道钱的价值,就想办法去借钱试试。
-Benjamin Franklin(美国总统富兰克林)If you wish to succeed, you should use persistence as your good friend, experience as your reference, prudence as your brother and hope as your sentry.
如果你希望成功,当以恒心为良友,以经验为参谋,以谨慎为兄弟,以希望为哨兵。
-Thomas Edison(美国发明家爱迪生) Health is certainly more valuable than money, because it is by health that money is procured.
健康当然比金钱更为重要,因为我们所赖以获得金钱的就是健康。
-Samuel Johnson(英国作家约翰逊) That man is the richest whose pleasure are the cheapest.
能处处寻求快乐的人才是最富有的人。
-Henry David Thoreau(美国作家梭罗) Sometimes one pays most for the things one gets for no