lint retainer

例句：

1. 1. The lint retainer is designed to catch hairs and prevent them from falling out of the brush.
   线头保持器设计用来捕捉头发，防止它们从刷子中掉落。
2. 2. The patient needed a lint retainer to keep his shirt clean after surgery.
   病人在手术后需要用线头保持器来保持他的衬衫干净。
3. 3. The lint retainer was removed by the doctor before he could continue with the procedure.
   医生在继续手术前移除了线头保持器。