拳击(或摔跤)比赛( bout的名词复数 );一段(工作);(尤指坏事的)一通;(疾病的)发作;

Successive bouts of heart failure are apt to become more refractory to treatment.
连续发作的心力衰竭可能变得难于治疗.
来源:词典精选例句There are many persons, however, who have frequent bouts of epigastric pain and heartburn for years.
然而有很多病人常有多年阵发上腹痛和烧心.
来源:词典精选例句I have had really bad bouts of flu that have really dragged me down.
我患上了重度流感,快被拖垮了。
来源:《柯林斯高阶英汉双解学习词典》
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