一个sed的问题，怎样进行多行条件匹配？

hdll

比如，我有这样的数据：

RD -  REPORT DATE/PAGINATION: Sep 94. 5p.
PY -  PUBLICATION YEAR: 1994
NT -  DESCRIPTIVE NOTE: European congress on molecular spectroscopy (
      22nd), Essen (Germany), 11-16 Sep 1994. Sponsored by Department
      of Energy, Washington, DC.

要把“NT - ”下一行的“\n      "(回车和空格)替换为空，怎么匹配啊，用s/\n      //好像不行啊。

linux_now

哥们，别忘了块，很好用的

[linuxnow@localhost test]$ sed '\cNT -c {n;N;s/\n/ /}' test.txt

RD - REPORT DATE/PAGINATION: Sep 94. 5p.
PY - PUBLICATION YEAR: 1994
NT - DESCRIPTIVE NOTE: European congress on molecular spectroscopy (
22nd), Essen (Germany), 11-16 Sep 1994. Sponsored by Department of Energy, Washington, DC.
RD - REPORT DATE/PAGINATION: Sep 94. 5p.
PY - PUBLICATION YEAR: 1994
NT - DESCRIPTIVE NOTE: European congress on molecular spectroscopy (
22nd), Essen (Germany), 11-16 Sep 1994. Sponsored by Department of Energy, Washington, DC.
RD - REPORT DATE/PAGINATION: Sep 94. 5p.
PY - PUBLICATION YEAR: 1994
NT - DESCRIPTIVE NOTE: European congress on molecular spectroscopy (
22nd), Essen (Germany), 11-16 Sep 1994. Sponsored by Department of Energy, Washington, DC.

hdll

谢了，可是好像不能用，我再找个更复杂的例子，比如像下面的文件，会有连续的几个要去掉回车空格的行，怎么处理呢？

PY -  PUBLICATION YEAR: 1994
NT -  DESCRIPTIVE NOTE: European congress on molecular spectroscopy (
　　　22nd), Essen (Germany), 11-16 Sep 1994. Sponsored by Department
　　　of Energy, Washington, DC.
SC -  SUBJECT CATEGORIES: Physics-Solid-state-physics (46D)
CC -  SUBJECT CATEGORY CODES: 46D, 46
AB -  ABSTRACT: Ion-induced damage in GaAs as a function of ion dose
　　　following 100 keV Si(sup +) implants has been investigated by
　　　Raman spectroscopy. A new approach for decomposition of Raman
　　　scattering intensity on to the crystalline and amorphous phase
　　　components has been used in analysis of Raman spectra. With
　　　increasing ion dose the following was observed: (a) the widths of
　　　vibrational bands of a-phase significantly increase, while the
　　　width of the LO((Gamma)) phonon band of c-phase remains
　　　unchanged; (b) the longitudinal optical phonon band of c-phase
　　　completely dissappears, while the transverse optical phonon mode
　　　evolves in to a new band of a-phase; (c) the wavenumbers of all
　　　vibrational bands of a- and c-phase shift to lower values by (
　　　approximately) 10--15 cm(sup (minus)1). A number of mechanisms
　　　possibly accountable for these shifts were analysed and
　　　evaluated.

处理后成为：（每个"[A-Z]\{2\} -"作行首）

PY -  PUBLICATION YEAR: 1994
NT -  DESCRIPTIVE NOTE: European congress on molecular spectroscopy (22nd), Essen (Germany), 11-16 Sep 1994. Sponsored by Department of Energy, Washington, DC.
SC -  SUBJECT CATEGORIES: Physics-Solid-state-physics (46D)
CC -  SUBJECT CATEGORY CODES: 46D, 46
AB -  ABSTRACT: Ion-induced damage in GaAs as a function of ion dose following 100 keV Si(sup +) implants has been investigated by Raman spectroscopy. A new approach for decomposition of Raman scattering intensity on to the crystalline and amorphous phase components has been used in analysis of Raman spectra. With increasing ion dose the following was observed: (a) the widths of vibrational bands of a-phase significantly increase, while the width of the LO((Gamma)) phonon band of c-phase remains unchanged; (b) the longitudinal optical phonon band of c-phase completely dissappears, while the transverse optical phonon mode evolves in to a new band of a-phase; (c) the wavenumbers of all vibrational bands of a- and c-phase shift to lower values by (approximately) 10--15 cm(sup (minus)1). A number of mechanisms possibly accountable for these shifts were analysed and evaluated.

linux_now

这个。。。有些难 ;)
提示一下，用sed分支处理