单词学习：rub 动词/名词
rub
/rʌb/
擦，摩擦；揉搓；涂抹；困难，障碍
Gu Laoshi gently rubbed his temples to relieve the headache after a long day of teaching.
顾老师在漫长的一天教学后，轻轻揉搓太阳穴以缓解头痛。
单词卡片
卡片已就绪
