本文首先对国内外冷弯成型领域及其数值模拟领域的工作进展情况进行了概括和总结，阐述了本文立题的背景和意义。
The paper firstly summarizes some things about cold-roll forming and its simulation in our country and international, introduces the work's background and significance.
首先我得写出脚本，然后列出必要的角色动态立绘和各种背景素材。
First I write the script then list up all the animation for characters and backgrounds that are needed.
背景：西替立嗪和地氯雷他定是抗组胺剂，可用于治疗季节性变应性鼻炎和慢性荨麻疹相关症状。
BACKGROUND: Cetirizine and desloratadine are antihistamines active in the treatment of symptoms associated with seasonal allergic rhinitis and chronic urticaria.
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