previously是什么意思 - previously中文意思和解释

previously基本解释

adv,以前；预先；仓促地

Guyana's railways were previously owned by private companies..圭亚那的铁路先前为私营公司所拥有。

事先advadv

真题例句...the scientist confirmed the snake was a previously unknown species after conducting a genetic ***ysis of tissue samples