be at ...

phr

• ① 【口】(吵着)请求(丈夫等)
  • She is at her father again to buy her a new bicycle.她又在吵着要她父亲买一辆新的自行车给她。

• ② 【口】攻击
  • The dog is at the cat again.那条狗又在攻击那只猫。

• ③ 【口】摸弄
  • He's been at my computer.他摸弄了我的电脑。