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I can't keep up with my Boy friend.

我赶不上我的男朋友。

He says I can't keep up with him anymore.

他说我跟不上他了。

I hope she will be all right and keep up with others.

听了我的话，她看起来好多了。

I can keep up with you.

我能跟上你。

Don't run — I can't keep up with you.

别跑了，我赶不上你了。

A Don't run — I can't keep up with you.

别跑了，我赶不上你了。

I hope you can keep up with the work.

我希望你能跟上功课。

I'm sure I can keep up.

我觉得我会理解的。

Keep up the good work, and I know you will succeed.

保持良好的工作，我知道你会成功的。

If I were you, I should keep up studies.

如果我是你，我就会继续学习。

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。