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- E-cadherin is a kind of calcium dependence protein .It is an across membrane glycal protein. 上皮型钙粘蛋白（E-cadherin）是钙粘蛋白家族中的一员，是一种钙依赖性跨膜糖蛋白。
- E-cadherin is a kind of calicum dependence protein .It is a across membrane glycal protein . 上皮型钙粘蛋白（E-cadherin）是钙粘蛋白家族中的一员，是一种钙依赖性跨膜糖蛋白。
- With the active transport mechanism and the Michaelis-Menten equation, the neutral alkaloid saturation model is set up to describe the alkaloid transport phenomenon across membrane in plant cells. 针对制约植物细胞生物碱释放的生物碱跨膜传递这一物理过程，引入有载体参与的主动运输过程来描述植物细胞生物碱的跨膜传递过程，将Michaelis－Menten酶促反应动力学公式应用于载体转运，建立了植物细胞中产物释放的饱和特性模型。
- For oral administration, the most common route, absorption refers to the transport of drugs across membranes of the epithelial cells in the GI tract. 口服是最常用的给药途径，其吸收涉及药物通过胃肠道上皮细胞膜的转运。
- He beckoned to me from across the street. 他在马路对面向我招手致意。
- In order not to be late, she cut across the fields. 为了不迟到，她抄近路穿过田野。
- One of its most important functions in plants is as an intracellular messenger with steep gradients of calcium concentration forming across membranes with a system of calcium pumps. 在植物中最重要的功能就是作为细胞内的信使，维持钙泵两侧钙离子的浓度梯度。
- Lightning zigzagged across the sky. 闪电曲折地在天空划过。
- Taking a blind man across the street is a kind act. 扶盲人过马路是一种善良的行为。
- An expression of pain flitted across her face. 她脸上闪过一种痛苦的表情。
- A thin layer of bone, membrane, or other tissue. 骨骼、粘膜或其它组织的薄层
- Ferryboats ply across the English Channel. 渡船定期往返于英吉利海峡。
- Is there a right of way across these fields? 人们有权通过这些田地吗？
- A wave broke across the surface of the pool. 一个波浪从池水表面掠过。
- He comes across as someone who keeps on his words. 他看上去好像是一个说话算数的人。
- He dashed across the street and ran towards me. 他冲过马路，向我跑过来。
- One day she happened to run across Xiao liu. 有一天她碰巧见到小刘了。
- Many a time have we come across this same photo. 我们多次都见到过这同一张照片。
- She set off on a trip across Europe. 她出发去作横越欧洲的旅行。
- I can move very fast across the ice on skates. 我穿着冰鞋在冰上滑得很快。
