自然发生
All the GDH-positive mutants including those obtained by nitrous acid treatment and those of spontaneous origin are capable of inductive synthesis of ADH.
所有GDH~+变种,包括自亚硝酸诱发突变或自发突变来源的,都能诱导生成ADH。
Poetry is the spontaneous overflow of powerful feelings, it origin from emotion recollected in tranquility.
诗歌是强烈感情的自然溢出, 它源于平静中集聚的情感.
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