something that no longer exists or happens
不再存在或发生的事情 (bù zài cúnzài huò fāshēng de shìqíng)
"With smartphones, landline phones are a thing of the past."
"有了智能手机，座机电话成了过去的事情。" (yǒule zhìnéng shǒujī, zuòjī diànhuà chéngle gùqù de shìqíng)
to find the real cause of a problem
to make people notice something
to reduce choices to a smaller number
to teach an AI system how to make predictions by feeding it...
to understand something by combining small details
a state of political hostility and tension between countries...
