For example, sodium in our blood plasma is almost to the point sometimes of 100 millimol or that's very, very concentrated.

比如，钠在我们的血浆中的浓度,有时几乎达到了一百毫克分子,或者说非常非常浓。

麻省理工公开课 - 化学原理课程节选

because they're like very, um, concentrated on their work.

可能是因为他们把精力全部集中在学习工作上了。

MIT的时尚品味 - SpeakingMax英语口语达人

They're red because they contain a special protein called hemoglobin which is very concentrated inside the cell.

红细胞的红色源于,其内部一种叫做血红蛋白的特殊蛋白质,血红蛋白在细胞内的浓度很高

耶鲁公开课 - 生物医学工程探索课程节选