他在北海学会了潜水员这一行的本事。He learnt his trade as a diver in the North Sea.在北海突然发现了一支法国船队。A fleet of French ships was sighted in the North Sea.他们在北海遇到风暴，船险些失事。They narrowly escaped shipwreck in a storm in the North Sea....
But the bacteria can also damage the cell cell hydrops, membrane structure destruction and cell necrosis.研究结果还表明,病菌也会对免疫器官产生损害,可造成细胞水肿, 膜性结构破坏及细胞坏死.It'should be differentiated among endolymphatic hydrops , perilymph...