unnoticeable

音标发音

They might kill people slowly in a way that's unnoticeable, taking effect over perhaps 10 - 30 years by accelerating degenerative diseases.
它们可能用不引人注意的方式缓慢地杀害人民，促进退化性疾病也许在10-30年生效。
It's like an agile athlete balancing on one foot: They constantly adjust and realign themselves, but these adjustments are virtually unnoticeable in the context of the performance.
这就像一只脚平衡的灵活的运动员：他们不断地调整并重新校准自己，但这些调整在性能的情况下实际上是不明显的。
The operating system can allow execution of multiple programs so quickly that it is virtually unnoticeable to a human user, making it seem as all the programs are running at the same time.
操作系统可以快速执行和响应程序，对计算机用户来说，这个执行过程难以被注意到的（因为太快了）。这也让我们觉得，操作系统好像同时执行了多道程序。

We'd go as far as to say that compression artifacts are very unnoticeable for the most part.
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RFLKT's sleek profile and lowly 2 ounce weight, make it virtually unnoticeable when mounted, while the coin cell operated battery has a life of over one year and requires no charging.
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So while this story will no doubt be yet another in a long line of Russian PR disasters, the actual real world impact will be so muted as to be unnoticeable.
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