春梦下面一抽一抽的是怎么回事

　　The Great Patriotic War. During the retreat of parts of the Red Army, there was a transfer of secret weapons - the BM-13 Guards mortars, later called Katyushas. During the operation, one machine sank. To prevent it from falling into the hands of the enemy, a group of several masters of sports under the command of Alexander Ermakov is urgently forming and being thrown behind the... (展开全部)