单词：as yet
至今仍
as yet的用法和样例：
例句
- As yet, no man has set foot on Mars.到目前为止还没有人登上火星。
- So far I haven't heard from hin yet.到目前为止我还没有收到他的音信。
- As far as I see, the evolution is theory.迄今我认为，进化论仅是个理论。
- We can credibly describe the band's latest album as their best yet.我们完全可以说，这支乐队的最新专辑是他们迄今的最佳作品。