Marginally means to only a small extent.
Sales last year were marginally higher than in 2011.
去年的销售量比2011年略微高一点。
The Christian Democrats did marginally worse than expected.
基督教民主党人的结果比预期稍差。
These cameras have increased only marginally in value over the past decade.
这些相机的价值在过去十年仅略微增加。