单词学习：providential 形容词
providential
/ˌprɒvɪˈdenʃl/
幸运的，凑巧的；天意的，神助的
It was providential that Mr. Gu arrived just in time to help us solve the difficult problem.
顾老师恰好及时赶到，帮助我们解决了这个难题，真是天意。
单词卡片
卡片已就绪
