碘容易集于甲状腺.Iodine tends to localize in the thyroid.缺碘是造成麻烦的常见原因.Lack of iodine is a common cause of trouble.将碘硫酸奎宁的微观针状晶体嵌于塑料片基之中.Microscopic needle - shaped crystals of herapathite are embedded in a plastic base....
We mustn't condemn him on mere suppositions.我们不可全凭臆测来指责他.But as with many such suppositions in natural history, no one had ever tested it.博物学中虽然有许多类似的假设,却从没人对此考证过。We must make one of two following highly improbable ...