It is miniscule, hardly detectable, even by the finest of your instruments.
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hardly detectable
几乎没有检测到
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Iran has described the Ghadir as stealth submarines, hardly detectable by sonar and aimed at coastal operations in shallow waters, notably in the Gulf.
伊朗称Ghadir为隐形潜艇，难以通过声纳探测，目的在于浅水水域的沿岸作战，特别是在海湾地区。
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