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1·So, even under normal situations, the gene flow among the subpopulations is more of an intermittent trickle than a steady stream.

所以即使在正常条件下，这些亚物种间的基因流动也更像是一条断断续续的细流，而不是一条不停流淌的小溪。

2·The fields of observation were unclear, the blood stream was slow, granular and intermittent. Blood stasis was observed in the top loops of capillaries and venulae.

视野不清晰，血流缓慢，颗粒状血流及血流间断、微血管袢顶及静脉淤血、微血管周围出血斑、汗腺汗珠增多。