邻桌的一位男士当时正高声地抱怨着。At a nearby table a man was complaining in a loud voice.我听到戴维高声喊叫着要他们回来。I heard David yelling and telling them to get back.他高声反对保守主义。He was a vociferous opponent of Conservatism....
中间试验仅包括脱硫阶段.The pilot - plant tests included only the desulfurization step.要根据具体情况来决定脱硫在CO变换之前或者之后.Sulfur removal can be carried out either before or after CO conversion as the situation dictates.当脱硫剂累计饱和硫容达20%时,可用于生产硫酸....