现在扶植和促进科技的机构到处都是，但(这样的机构)曾一度非常稀少。

Institutions Institutions that foster and promote technology are now everywhere, but once were quite rare.

youdao

现在扶植和促进科技的机构到处都是，但(这样的机构)曾一度非常稀少。

Institutions Institutions that foster and promote technology are now everywhere, but once were quite rare.

youdao