The function of the thymus was unknown until relatively recently.

直到不久以前，人们对胸腺的功能尚不明了。

youdao

But until relatively recently we've known little about its true nature.

可一直到最近，我们才开始了解它的真实状况。

youdao

Until relatively recently, Beijing's default attitude was confrontational.

直到不久前，北京的默认态度还是对峙。

youdao

The incident severely strained the bond between Turkey and Israel, which until recently had enjoyed relatively warm relations.

VOA: standard.2010.06.10

Up until relatively recently these countries accepted a need to import management expertise from the West.

FORBES: The Business School Beat

Until relatively recently, lawyers, architects and pharmacists learned their trade through apprenticeship, not through higher education.

FORBES: Five Reasons To Skip College

This former hospice for pilgrims and, until relatively recently, a working hospital, contains almost a millennium of history, religious art and ruins.

BBC: Two days in Siena, Italy