Although we have sometimes disagreed on scientific matters, I have always remained your friend.

尽管在一些科学问题上我们有分歧，我一直把你当朋友看。

Ma says tracing the COVID-19 virus is a complex scientific matter that should only be undertaken by scientists around the world through joint research.

马朝旭表示，新冠病毒溯源是一个复杂的科学问题，应该也只能由全球科学家合作开展研究。

He greatly feared he should not get one careful enough for such scientific matter; whereupon Tabitha said she would be delighted to do it for him.

他非常担心他不应该为这样的科学问题找一个足够小心的人； 于是塔比莎说她很乐意为他做这件事。