【英语时差8,16】阿司匹林

 In the 1890’s a young scientist, named Felix Hoffman, was looking for a cure for his father’s terrible arthritis¹. Hoffman noticed that acetylsalicylic acid produced the benefits of the earlier drug without the side effects. In 1899, the new compound was first sold under the name of “aspirin².” Salicylic acid and acetic³ acid can both irritate the stomach, but when they are joined by a chemical reaction, the result is safe for most people. Unfortunately, air, heat, and moisture, can reverse that reaction turning your aspirin back into salicylic acid and acetic acid, both of which are harmful to the stomach lining⁴. Since acetic acid is a concentrated form of vinegar, you can smell a bottle of aspirin to tell if it’s getting old. If aspirin smells strongly of vinegar, throw it away; it’s no longer aspirin.

1 arthritis   

n.关节炎

参考例句：

• Rheumatoid arthritis has also been linked with the virus.风湿性关节炎也与这种病毒有关。
• He spent three months in the hospital with acute rheumatic arthritis.他患急性风湿性关节炎，在医院住了三个月。

2 aspirin   

n.阿司匹林

参考例句：

• The aspirin seems to quiet the headache.阿司匹林似乎使头痛减轻了。
• She went into a chemist's and bought some aspirin.她进了一家药店，买了些阿司匹林。

3 acetic   

adj.酸的

参考例句：

• Acetic acid is one of the organic acids which have many uses.醋酸是用途最广泛的有机酸之一。
• The wine in him has almost melted acetic acid.他一肚皮的酒几乎全化为了醋酸。

4 lining   

n.衬里，衬料

参考例句：

• The lining of my coat is torn.我的外套衬里破了。
• Moss makes an attractive lining to wire baskets.用苔藓垫在铁丝篮里很漂亮。