在今年的大会上将首次由一位女士当主要发言人。

For the first time, a woman will be the keynoter at the convention this year.

《牛津词典》

由一位独立的教育心理学家做评估是至关重要的。

An assessment by an independent educational psychologist was essential.

《柯林斯英汉双解大词典》

会议由一位受过充分训练、技巧娴熟的协调人主持。

The conference is chaired by a highly skilled facilitator who has been fully trained.

《柯林斯英汉双解大词典》

This God is one who brings things into being, whether it's a cosmos from chaos, or now a new nation from a band of runaway slaves.

这个上帝使是一切得以存在的根源，不论是由混乱而来的宇宙秩序，或者是由一帮逃窜奴隶而来的新国度。

耶鲁公开课 - 旧约导论课程节选

That can be supplied by an antagonist called Aldopa - which is not exactly the same as dopamine, it's slightly different.

这种物质能够由一种拮抗剂,叫做阿多巴转化而来,但它与多巴胺的结构并不完全相同,有一点差别

耶鲁公开课 - 生物医学工程探索课程节选

I could have done this in another way but I am going to just be extra deliberate so I make sure that this copy ends with back slash zero and voila, now, I have a copy.

我可以用另外一种方式来处理,我确保这个拷贝由反斜杠0结尾,那样，现在我得到了一个拷贝。

哈佛公开课 - 计算机科学课程节选