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But it was a long time ago.

不过那是很久以前的事了。

Yes. I don't know when. A long time ago.

我不知道是什么时候走的。

That was a long time ago. I was gonna tell you.

那是很久以前了，我想要告诉你的

But it was such a long time ago.

不过那 是很久以前的事了。

This is a place in the story of a long time ago.

这是一个发生在很早以前的故事。

That was a long time ago,wasn't it?

那是很久以前的事情了，是吗？

Yeah, that was a long time ago.

那是很久以前的事了

I don't remember,' he says,'A long time ago.

他说，我不记得了，那是很久之前的事了。

I couldn't remember that. That was a long time ago.

我无法想起来，那是很久以前的事了。

Look, it was a long time ago.

要知道，那是很久以前的事了

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。