ABSTRACT the glass transition is one of the most challenging problems in condensed matter physics, and it is also a long-standing unresolved one for over half a century.

玻璃化转变是凝聚态物理学中最具挑战性的问题之一，也是半个多世纪以来长期未能得到解决的问题之一。

youdao

In the abstruse world of physics, glass is indeed classified as a liquid (albeit a supercooled and therefore not very mobile one).

ECONOMIST: Non-dribbling glasses