diarrhoea (US diarrhea): n [U] condition that causes waste matter to be emptied from the bowels frequently and in a watery form 腹泻
cramp : sudden and painful tightening of the muscles, usu caused by cold or too much exercise, making movement difficult 痉挛; 抽筋
vomit : eject (food, etc from the stomach) through the mouth; be sick 呕吐（食物等）; 恶心  阅读全文

hereby:adv (fml 文) by this means; as a result of this 以此方式; 由此.
allegiance: n [U] (fml 文) ~ (to sb/sth) support of or loyalty to a government, ruler, cause, etc （对政府, 统治者, 事业等的）拥护, 忠诚: swear (an oath of) allegiance to the Queen 宣誓效忠女王.  阅读全文