每日商务英语 第709期:主动

One's own free will ————— 主动，自愿

英文释义
Voluntarily; without coercion.

例句
My usually lazy teenage son recently surprised me by starting to study vigorously at school of his own free will.
我儿子10多岁，一直比较懒，可不久前，他开始主动刻苦学习，让我感到意外。