Bile was separated upon celite columns into its taurine and glycine conjugated fractions.胆汁用硅藻土滤蕊分离出它的牛磺酸和甘氨酸的共轭结合部份....simple math concepts, such as decimals and fractions.简单的数学概念，如小数和分数Different elution fractions from ...
Nancy was lacing her shoe up when the doorbell rang.门铃响时南希正在系鞋带。He took to lacing his fingers together in an attempt to keep his hands still.为了不让双手发颤，他十指紧扣。At the turn of the century, women had to have help in lacing up ...
When does your driving licence expire?你的驾照什么时候到期？His term of office as president will expire next year.他的总统任期明年将届满.The flowers expire fragrance.鲜花散发芳香....