the process of combining things in a particular order, or discovering the order in which they are combined

A common sign of dyslexia is that the sequencing of letters when spelling words may be incorrect. 诵读困难的常见征兆是拼写单词时字母的顺序可能会出错。

the process of discovering the order in which nucelotides (= chemical substances) are combined within DNA

DNA sequencing is giving us important new insights into biology and disease. DNA测序让我们对生物学和疾病有了进一步的认识。