Then I learned that the problem was acid reflux, a relatively common condition in which stomach acid comes back up the esophagus and scalds the vocal cords, usually during sleep.

后来我了解到起因是胃酸倒流，这是很多人都会碰到的情况：通常在睡觉的时候，胃酸回流经过食道，烧伤了声带。

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Generally speaking, bamboo is fond of high humidity, warm climate, thick, slightly acid soil with a good ventilating condition and abundant in organism.

一般来说，竹子适于在气候潮湿温暖，土壤厚实略显酸性且通风良好富含有机物的环境中生长。

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Mr Sands thinks his problem stems from an acid reflux condition caused by a damaged valve in his stomach.

Sands先生认为他的这个毛病最初源于胃部的幽门受损而导致的胃酸回流。

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Professors Brian Wharton and Ian Booth, from the Institutes of Child Health in London and Birmingham, warned that in people with vitamin B12 deficiency, consumption of folic acid may mask a condition called megaloblastic anaemia - which if not picked up can lead to degeneration of the spinal cord.

BBC: Caution urged over folic acid

Gout is a particularly painful condition, consisting of a build-up of uric acid crystals (or urates) in the joints.

FORBES: Gout & About: A Slow Walk Through the Northern Quarter

Frequent heartburn or acid reflux are symptoms of a condition called GERD, or gastroesophageal reflux disease, which occurs when a sphincter muscle in the lower esophagus stops working properly.

WSJ: New Surgical Option for Heartburn