And so the breakdown that we've had in past terms are just under half of the students describe themselves as among those less comfortable just 10% over 10% among those more comfortable, in between.

在以往的学期里,仅有将近一半的学生,认为自己对电脑知识不太熟悉,认为自己比较熟悉电脑的人略多于，剩余的这些学生介于两者之间。

哈佛公开课 - 计算机科学课程节选

Now, the differences here may be subtle in terms of chemical composition or if you put these cells under a microscope and looked at their analysis.

干细胞与祖细胞化学成分的区别,还非常微小,除非你把细胞放在显微镜下,或者看细胞分析报告

耶鲁公开课 - 生物医学工程探索课程节选