contractionKK [kənˋtrækʃən] /kənˈtɹækʃən/发音名词1收缩、缩小Metal undergoes contraction as the temperature drops sharply.温度急遽下降时,金属会产生收缩。2阵痛、宫缩常用复数Her contractions started coming every five minutes.她的阵痛开始每五分钟来一次。3萎缩、紧缩经济The economy suffered a sharp contraction in the second quarter.第二季经济出现大幅萎缩。4缩写形、缩约形语言学Avoid contractions like "don't" in formal writing.正式写作中应避免使用像 don't 这样的缩写形。5收缩、收紧医学The drug reduces the contraction of blood vessels in the legs.这种药物可减少腿部血管的收缩。用这个字练口说→