尚未的英文：
not yet
still not

参考例句：

Not implemented yet!
尚未实现!

The underlying reason for the failure remains unknown.
失败的根本原因尚未搞清。

Television has not killed the cinema yet.
电视尚未扼杀电影。

Unsettled weather.
尚未稳定下来的天气

unset gelatin;unset cement.
尚未凝结成固体的明胶;尚未干硬的水泥

Shanghai has not yet reached the zenith of her prosperity.
上海尚未达到繁荣的顶点。

We haven't yet received his resignation.
我们尚未收到他的辞呈。

There's a cutthroat at large.
有个杀人犯尚未捕获。

The issue is unresolved and certain to remain controversial
结论尚未达成，显然还将继续争议。

The issue is unresolved and certain to remain controversial.
结论尚未达成，显然还将继续争议。

still是什么意思：
adv. 还，仍旧；尽管如此，然而，还是；还要，更；静止的；寂静的；平静的
v. 使平静；使静止
n. 寂静

stripping still
汽提塔蒸馏器

The earth was still vibrating, the rails still humming.
大地还在震动，轨道还在营营的响。

There are still two years to go.
还有两年时间可利用。

The inscription was still legible.
铭文仍清晰可辨。

They still do not apply for the visa.
他们还没有申请签证。