discerns , discerning , discerned
If you can discern something, you are aware of it and know what it is.
You need a long series of data to be able to discern such a trend.
你需要一大串数据才能认清这一趋势。
If you can discern something, you can just see it, but not clearly.
Below the bridge we could just discern a narrow, weedy ditch.
在桥下我们仅可隐约看见一条狭窄的、杂草丛生的沟壑。