「汽油……大多數州現在每加侖低於2.3美元，某些地方是每加侖1.99美元」
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。体育直播对此有专业解读
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The change to agar was a marked improvement. The jelly is so effective that it is still an invariable ingredient in what is known today as the “Koch’s plating technique” or the “culture plating method.” As Koch himself noted in 1909: “These new methods proved so helpful…that one could regard them as the keys for the further investigation of microorganisms…Discoveries fell into our laps like ripe fruits.”，这一点在体育直播中也有详细论述