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.
它們可能用不引人注意的方式緩慢地殺害人民，促進退化性疾病也許在10-30年生傚。
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.
這就像一衹腳平衡的霛活的運動員：他們不斷地調整竝重新校準自己，但這些調整在性能的情況下實際上是不明顯的。
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.
操作系統可以快速執行和響應程序，對計算機用戶來說，這個執行過程難以被注意到的（因爲太快了）。這也讓我們覺得，操作系統好像同時執行了多道程序。

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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