干脆地

The ironic part is that the principal spent quite a bit of time talking about attitude but when he began, I saw some teachers take their cell phones out. Some slouched in their chairs and read magazines. Others hunched over their lesson books to prepare for class. Many others simply talked in hushed tones about everything under the sun except the meeting.

具有讽刺意味的是校长花不少的时间讲态度的问题，但他一开始讲，我就看到有些老师拿出手机，有的老师没精打彩地坐在椅子上看杂志，有的躬下身子在教材上备课，还有很多老师干脆交头接耳，话题海阔天空，除了不谈会议内容。

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。