步履艰难地走

The old man plods along, hardly able to lift each foot.

那老人步履艰难地走着，双脚几乎都提不起来。

Taking a few halting steps, he threw himself with outspread arms onto the screeching, quailing guardsmen, who tore at each other in their desperation to escape back through the broken doorway.

步履艰难地走了几步，他伸展双臂，把自己投向了尖叫着的、恐惧的卫兵们，这些卫兵彼此拨打着甩掉同伴，绝望地从身后打破的门口向外奔逃。

He trudged home feeling lonely and let down.

他步履艰难地往家走，感到孤独而沮丧。

There was a stream of refugees trudging up the valley towards the border.

一队难民步履艰难地爬上山谷向着边境走去。

As he trudged forward he realized, in some remote part of his battered mind, that most of this was the work of stone and dripping water, not of laboring hands.

当他步履艰难地向前走的时候，他那已经混乱的思想中，那些埋在深处的智力意识到，之所以会有这样的情景，是由于滴水将石头打磨成这些形状，这绝不是出自人工雕刻。

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。