聚精会神短语用英语怎么说

"聚精会神"短语用英语可以说成 "to pay rapt attention" 或 "to be fully absorbed in something"。

这个短语来源于中文，意思是全神贯注于某件事物，不顾一切。

例句：

He paid rapt attention to the lecture. 他聚精会神地听着演讲。
She was fully absorbed in her book. 她聚精会神地读着她的书。
The audience was paying rapt attention to the performance. 观众们聚精会神地观看着表演。