US Marines from the 24th Marine Expeditionary Unit try to take shelter from a sand storm at forward operating base Dwyer in the Helmand province of southern Afghanistan Wednesday, May 7, 2008.是什么意思_US Marines from the 24th Marine Expeditionary Unit try to take shelter from a sand storm at forward operating base Dwyer in the Helmand province of southern Afghanistan Wednesday, May 7, 2008.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句