2硬的等级再区分为中等硬(Moderately Hard)与硬(Hard)(Soil Survey Staff, 1993).
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Moderately hard water 中等水 ; 中度硬水
moderately hard
适度硬
以上为机器翻译结果，长、整句建议使用 人工翻译 。
With a vacancy rate of less than one percent across the city, moderately-priced housing is getting hard to find.
ECONOMIST: Rent control
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