坐姿懒散不会影响脊柱 但会影响记忆和心情Slouching isn’t bad for your spine, but may impact your memory
从小我们就被教育坐姿要端正，避免含胸驼背的懒散坐姿，但事实上，喜欢懒散坐姿的人还真不少。好消息是，近日根据The Conversation网站的报道，大量研究表
0评论2024-05-21361
中国研究人员开发用于医疗器械的4D打印形状记忆聚合物 - Chinese researchers develop 4D-printed shape memory polymer for medical
中国研究人员利用4D打印技术开发了一种可生物降解的形状记忆聚合物（SMP），据兰州大学介绍，兰州大学第二医院和中国科学院兰州化学物理研究所的研究人员联合开展了这项研究，将材料科学和临床医学的跨学科研究相结合。他们还报道了一种4D打印的形状记忆下腔静脉滤器
0评论2023-03-02361
美国鸣钟300次，纪念30万新冠逝者，从天亮鸣至天黑……Washington National Cathedral tolls its bell 300 times in memory of 300,
12月15日，美国华盛顿国家大教堂鸣钟300次，以纪念因新冠逝世的30万美国民众，从天亮鸣至天黑。 [Photo/CGTN] The Washington Na
0评论2020-12-21997
A Funny Memory 童真记趣
Oh God! I think I was about seven and half when my sisters and I pulled this stupid stunt. I remember watching television with them and the show on happened to be our favorite program to watch. All of a sudden we heard my brother, Chris, ye
0评论2016-09-28455
Types of Friends
A Faraway Friend is someone you grew up with or went to school with or lived in the same town as until one of you moved away. Without a Faraway Friend, you would never get any mail addressed in handwriting. A Faraway Friend calls late at ni
0评论2016-09-19873