单词:group of symmetry operations
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US Military Plans Operations in Africa Onboard a U.S. military transport plane ready for takeoff from the airport at Ouagadougou, capital of Burkina Faso are U.S.-trained Burkinabe troops on a training mission to Mali. The airport is the hub of what
DEVELOPMENT REPORT - U.S. Group Expands Free Help in China for Children With Clefts By Jill Moss Broadcast: Monday, December 12, 2005 I'm Jim Tedder with the VOA Special English Development Report. Cl
How Do Islamic State Militants Finance Their Operations? From VOA Learning English, this is In The News. This week, the United States Congress approved part of President Barack Obamas plan to defeat Islamic State militants. The Senate voted Thursday
AS IT IS 2015-11-14 Iraqi Kurd Chief Says Sinjar Taken from Islamic State Kurdish fighters supported by American airstrikes have recaptured the northern Iraqi town of Sinjar from Islamic State militants. Iraqi Kurdish President Massoud Barzani made t
The World Food Program is pulling its operations out of much of rebel-controlled Somalia, affecting some 1 million in-need Somalis. The food aid organization is citing unacceptable demands from the Islamist insurgent group al-Shabab that reached a br