4周搞定2000+托福核心词
以前；原来
formerly
常考释义
This is the time period in which most scientists formerly believed the area to be inhospitable for humans.
之前大部分科学家认为此时此地不适合人类生存。
来源于：阅读OFFICIAL9 P1adv. 以前；从前
He had formerly been in the Navy.
他以前曾在海军服役。
adv. 刚才<废>
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