如臂使指

rú bì shǐ zhǐ

定義

1. as the arm moves the finger (idiom)
2. freely and effortlessly
3. to have perfect command of

如臂使指 の構成語

• 使 shǐ: to make
• 如 rú: as
• 指 zhǐ: finger
• 臂 bì: arm