threadbare

他的外套袖口已经磨破，露出里面的线头。

His coat sleeves were ___threadbare at the cuffs, showing the loose threads.

那个关于经济复苏的论点早已陈腐，缺乏新意。

The argument about economic recovery is ___threadbare and lacks originality.

这家慈善机构向无家可归者分发了破旧的毯子。

The charity distributed ___threadbare blankets to the homeless.