true grime
真正的污垢
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Its true hues may become obscured by grime and even buildups of salt.
它的原色可能会由于尘垢甚至是盐分的积累而变模糊。
youdao
Its true hues may become obscured by grime and even build ups of salt.
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