1. pain caused by venous swelling at or inside the anal sphincter. 
   肛门内外因静脉肿胀而疼痛。
2. The failure of a ring of muscle fibers, such as a sphincter of the esophagus, to relax. 
   弛缓不能指肌肉纤维不能松弛，如食管内的括约肌
3. More than 70 percent of duodenal and stomach ulcers are caused by a bacterium called helicobacter pylori. 
   有70%以上的十二指肠溃疡和胃溃疡是由幽门螺杆菌引起的。
4. The standard treatment is antibiotics but，worryingly，in many patients H. pylori has now become resistant to antibiotics. 
   标准的疗法是使用抗生素，但令人担忧的是许多病人体内的幽门螺杆菌已经对抗生素产生了抗药性。
5. Recent studies show between one and two grams of mastic，taken daily as a supplement for just a few weeks，heals ulcers and completely deactivates H.pylori in almost three-quarters of people with ulcers--even when the bacterium was resistant to antibiotics. 
   最近的研究表明，溃疡病人在坚持每天服用一至两克乳香，持续几周之后，有3/4的溃疡患者可以愈合，幽门螺杆菌也完全丧失活力，甚至对那些对抗生素有抗药性的细菌也有效。

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