Agricultural chemistry is still in its infancy; who can tell that to-morrow, by means of a new invention or discovery, the produce of the soil may not be increased five or ten fold?
英
美
释义
农业化学还在幼稚时代,明天也许由于某种新发现或创造,一下子就把产量提高五倍或十倍,谁能知道呢?
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