Though most persons with gallstones are asymptomatic, there may be episodes of acute cholecystitis marked by intense right upper quadrant pain.

虽然大多数胆石症病人无临床表现，然而胆囊炎急性发作可致右上腹痛。

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The pain of angina is usually not as severe as the intense precordial crushing sensation associated with acute myocardial infraction.

心绞痛性疼痛，通常不如急性心肌梗塞时心前区挤压感觉那样剧烈。

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Whole villages suffer from the intense bone pain that is typical of acute cadmium poisoning before they realize what is wrong.

WSJ: Review & Outlook: China's Toxic Rice Bowl