Rather, art begins to document a repetitive, indefinite, maybe even infinite present – a present that was always already there and can be prolonged into the indefinite future.

艺术开始记录一种重复的、不定的，或许甚至是无限的“当下”—一种已然存在且可能被延长到无尽的未来的“现在”。

youdao

We use the present perfect tense to talk about something that happened at an indefinite time in the past.

我们使用现在完成时谈论发生在过去某个不确定的时间的事情。

youdao

Recent researches revealed that there's a small group of cells with self renewal and indefinite potency are present in the tumors, and they are the sources of recurrence and metastasis.

新的研究发现在肿瘤组织中有一类具有自我更新及分化潜能的细胞亚群，而且是肿瘤复发及转移的根源。

youdao