When heterothallism is purely physiological, morphologically identical strains exist ( often designated plus and minus strains ). 当异宗配合纯粹是生理上时, 存在形态上相同的菌系 ( 经常用+—号表示 ).
Specialists see various reasons for the recent surge in inflation.专家们认为目前通货膨胀加剧有多种原因。The rate of inflation is running at about 2.7 percent.通货膨胀率大约为2.7%。He fears inflation will ratchet up as the year ends.他害怕通货膨胀会在年终更加严重。...