这种要求已经在我的《投机是一门有利可图的职业》书中给予回答。

This demand was answered by my first small book, "Speculation A Profitable Profession".

youdao

这种要求已经在我的《投机是一门有利可图的职业》书中给予回答。

This demand was answered by my first small book, "Speculation A Profitable Profession".

youdao