For the problem of sorting signed genomes, a sorting operation can change both the gene sequence and the signs of genes.
对于无向基因组的重组排序问题，重组排序操作只改变基因序列，不会改变基因的符号。
The scientists used a functional magnetic imaging scanner to track signs of neural activity among 19 affected children and 23 other children who were asked to remember a simple sequence of letters.
这些科学家让19名有此症状的儿童及此外23名儿童记忆一系列简单的字母，并用一台功能性磁力成像扫描仪追踪他们的神经勾当迹象。
The interface study of syntax-semantics is one of the important approaches in modern linguistics. The linearization of language has people notice the sequence order of linguistic signs first.
句法语义的界面研究是当代语言学研究的一个重要内容，语言的线性特征使人们首先注意到符号排列的前后顺序。
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