近年來華文科幻小說越來越受關注，向來以純文學寫作為主的林俊頴也借用科幻元素創作長篇小說《猛暑》（2017），抒發其對我島（臺灣）的種種感受。未來想像與抒情意識是理解《猛暑》的雙重線索，二者皆與時間因素有關。本文首先討論小說的未來時空／時態的敘事特性與意義，以及島嶼的「無主」狀態所蘊含的寓言性。其次則就敘事者「我」醒來後，對時間作用於人／物的景象而引起的「物哀」與「身悲」之感，說明這一抒情主體及其抒情意識如何與我島從「過熱」朝向「熱寂」狀態的未來懸想相互興發，乃至於以文字作為最後的憑藉。本文以《猛暑》為例，最終所要指陳的是，在現實中島上意識形態充滿糾結與陷入僵局的時刻，文學的虛構與想像所發揮的作用與意義。

Science fiction writing in Chinese has attracted more and more attention in recent years. Lin Jun-yin, always a belletrist, also borrowed sci-fi elements to create his novel Formosa Heat (2017), which expressed his various feelings toward I-island (Taiwan). Future imagination and the lyrical consciousness were dual clues to comprehend Formosa Heat, both of which related to the time factor. This article first discussed the narrative characteristics and meaning of the novel's future space-time/ tense, and the allegorical nature of the island's “ownerless” state. Furthermore, this article analyzed the mutual relationships of the fiction. As it depicts the narrator “I” feel “sensitivity to things” and “sadness” caused by the scene of time acting on people/things after waking up. This illustrated how this lyrical subject and its lyrical consciousness interacted with future fancy, in which the island state was changing from “overheating” to “heat death of the universe.” Finally, written words became the last resort. The article takes Formosa Heat as an example, pointing out the role and significance of literary fiction and imagination at the moment when the island's ideology is full of entanglement and stalemate in reality.