However, until today, there is still no a generalized and commonly accepted quality standard.

但至今没有一个公认的、统一的质量标准。

youdao

We've never had a reasonable chance of locating such a wanderer until today, however.

ENGADGET: University of Montreal detects an orbitless planet, shows that stars don't have an iron grip (video)

Any of the cabling that plugs into that port, however, has been non-existent until today.

ENGADGET: Next iPhone's tiny docking connector possibly spotted (update: more details)

However, Microsoft has only really been comfortable with showing the finished product -- until today.

ENGADGET: Microsoft shows Surface prototypes, teases the tablets that might have been