回文结构含有双股脱氧核糖核酸的一部分,其中的核苷酸系列的一股颠倒顺序来读取即为互补的一股 The complex of sand bodies developed in a cyclical sequence of off-lapping sedimentary beds 砂岩复合体发育于退覆沉积层的旋回层内.Molecular clouds play an integral role in the prestellar evolutionary sequence of interstellar matter 分子云在星际物质的星前期演化序列中起着不可缺少的作用.The camera moved in on the hero for a close-up sequence 准备拍摄一组特写镜头.
