A military parade marched slowly and solemnly down Pennsylvania Avenue.阅兵队列沿宾夕法尼亚大道缓慢而庄严地行进。At the middle of this year the government staged a huge military parade.今年年中，政府举行了一次盛大的阅兵活动。A military parade marched slowly up Pennsylvania Avenue.一支阅兵队列沿宾夕法尼亚大道缓慢地行进。