单词学习：oasis 名词
oasis
/əʊˈeɪsɪs/
绿洲；（困苦中）令人感到舒适的地方
The library became an oasis of calm for Gu Laoshi during the busy semester.
图书馆成了顾老师在繁忙学期中一个宁静的绿洲。
单词卡片
卡片已就绪
