To his frustration he had watched from the sidelines as a naval R.O.T.C. instructor at George Washington University while his Marine buddies headed for the invasion of Iraq in 2003.

令他感到伤心的是在乔治华盛顿大学做海军R.O.T.C教练时，他看到了他的对手就是昔日的战友带头在2003年入侵伊拉克。

youdao

The only evidence was cut into a tree and a fence: the letters C-R-O and the word Croatoan,C-R-O-A-T-O-A-N.

VOA: special.2009.08.17

It was a short way of writing a different spelling of the words all correct. Some foreign-born people wrote all correct as o-l-l k-o-r-r-e-c-t, and used the letters O.K.

VOA: special.2010.02.28