Radical:

meaning for jiàn:

  • - key (on a piano or computer keyboard)
  • - button (on a mouse or other device)
  • - chemical bond
  • - linchpincrucial point
  • - crux
  • - Classifiers: 个
  • - key
  • - crucial
  • - pivotalkeyboardkeywordbutton or key (on a device)
  • - keystroke
  • - Classifiers: 个
  • - to press a buttona piano key

yǒu
liǎnggè两个
shūrù输入
jiàn
yǒu
máobìng毛病

Two input keys don't work.