A class of machine learning algorithms that uses multiple layers to progressively extract higher-level features from raw input.
一种机器学习算法类别，通过使用多个层级逐步从原始输入中提取更高级的特征。 (Yī zhǒng jīqì xuéxí suànfǎ lèibié, tōngguò shǐyòng duō gè céngjí zhúbù cóng yuánshǐ shūrù zhōng tíqǔ gèng gāojí de tèzhēng.)
"The AI system improved through deep learning, making it smarter over time."
"该AI系统通过深度学习不断改进，随着时间推移变得更智能。" (Gāi AI xìtǒng tōngguò **shēndù xuéxí** bùduàn gǎijìn, suízhe shíjiān tuīyí biàn dé gèng zhìnéng.)
to be upset about something that cannot be changed
to close an area so people cannot enter
to express feelings or emotions honestly
a sudden brilliant idea or solution
angry or offended, usually for a short time
extremely modern and innovative
