Another black writer dismissed Ellison because Ellison demanded that writing skills must be learned before political ideas can be expressed.

VOA: special.2010.09.19

They can only be moral if there is some semblance of human choice or will expressed in the relationship, our ability to do otherwise.

它们的道德性只存在于,人类在关系和,去做其他事情的能力当中，选择或者表达意愿的时候。

耶鲁公开课 - 政治哲学导论课程节选

Let's look at how these two different ways can be used and expressed by the same pattern.

下面我们来看看这同一个句型怎样可以用和表达这两种不同的用法。

How can I 课堂 - SpeakingMax英语口语达人

They can insert genes into non-dividing cells and cause those genes to be expressed.

它使基因导入没有分裂的细胞,并使其表达

耶鲁公开课 - 生物医学工程探索课程节选