存在字符串时如何在两个定界符之间提取文本

我有一个大数据文件，看起来像：

//
ID   1.1.1.258
DE   6-hydroxyhexanoate dehydrogenase.
CA   6-hydroxyhexanoate + NAD(+) = 6-oxohexanoate + NADH.
CC   -!- Involved in the cyclohexanol degradation pathway in Acinetobacter
CC       NCIB 9871.
//
ID   1.1.1.259
DE   3-hydroxypimeloyl-CoA dehydrogenase.
CA   3-hydroxypimeloyl-CoA + NAD(+) = 3-oxopimeloyl-CoA + NADH.
CC   -!- Involved in the anaerobic pathway of benzoate degradation in
CC       bacteria.
//
ID   1.1.1.260
DE   Sulcatone reductase.
CA   Sulcatol + NAD(+) = sulcatone + NADH.
CC   -!- Studies on the effects of growth-stage and nutrient supply on the
CC       stereochemistry of sulcatone reduction in Clostridia pasteurianum,
CC       C.tyrobutyricum and Lactobacillus brevis suggest that there may be at
CC       least two sulcatone reductases with different stereospecificities.
//

我想提取此文件中包含工作的部分anaerobic。我特别想要ID行。

是否可以在ID和//之间搜索文件，以查找anaerobic输出并将其打印到新文件？如果整个部分都被打印出来，如我所料，我可以将其重新打印出来。

预期应该是

ID   1.1.1.259

要么

ID   1.1.1.259
DE   3-hydroxypimeloyl-CoA dehydrogenase.
CA   3-hydroxypimeloyl-CoA + NAD(+) = 3-oxopimeloyl-CoA + NADH.
CC   -!- Involved in the anaerobic pathway of benzoate degradation in
CC       bacteria.
//