现在扶植和促进科技的机构到处都是，但(这样的机构)曾一度非常稀少。

Institutions Institutions that foster and promote technology are now everywhere, but once were quite rare.

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拮抗性试验结果表明，放线菌拮抗菌虽然广泛分布于土壤中，但具有强烈抑菌作用的拮抗性菌株是非常稀少的。

In antibiotic test, the datum showed that the antagonistic Actinomyces extensive distribute in the soil, but the strongly antagonistic Actinomyces were few.

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拮抗性试验结果表明，放线菌的拮抗菌虽然广泛分布于植物根际土壤中，但具有强烈抑菌作用的拮抗性菌株是非常稀少的。

In antibiotic test, the datum showed that the antagonistic Actinomyces extensive distribute in the plant rhizosphere soil, but the strongly antagonistic Actinomyces were few.

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