mental arithmetic
n. 心算
例句与用法:
He got the answer by mental arithmetic.
他用心算得出了答案。
词形变化:
副词: mentally |
详细释义:
ph.
心算
mental arithmetic
n. 心算
例句与用法:
He got the answer by mental arithmetic.
他用心算得出了答案。
词形变化:
副词: mentally |
详细释义:
ph.
心算