under one's belt

phr

• ① 【口】(食物等)在腹中,在肚里
  • with a good deal under one's belt吃[喝]饱肚子

• ② 【口】拥有或经验过(值得夸耀的事物);在某人手中
  • He had six years of experience in teaching English under his belt.他拥有六年的英语教学经验。