Army`s White Sand Proving Ground 是什么?

Army`s White Sand Proving Ground 是什么? WHITE SAND BEACH怎么样 WHITE SAND DUNES怎么样 白沙滩 WHITE SAND BEACH怎么样 白沙丘 WHITE SAND DUNE怎么样 Army's Day is_______ People's Liberation Army 英语翻译Subjects like snow,sand,and white flowers - anything where white is the predominant color – present one particular difficulty:It’s tough to keep detail in the white areas without turning them somewhat gray.The situation gets more diff s'sand是什么牌子啊? Army day还是Army's day,为什么不加s army s day在什么时候 Army's day is是什么意思 the People's Liberation Army. U S ARMY 什么意思? America’s Army Online是什么意思/ sand sand.. Sand