然后你观察反应说，我有多少反应物？

And then you look at your reaction and you say, how many moles of reactants do I have?

youdao

目的观察反应停的抗炎作用及对免疫功能的影响。

Aim To observe anti - inflammation of thalidomide and its effect on immunity.

youdao

常规要做两个皮内试验，这两个试验同时进行，并观察反应。

Two intradermal tests are routinely done. Both are administered at the same time and reactions noted.

youdao

And the second thing is that the observer is part of the observation through that interaction.

第二件事是观测者,是内部反应的观察资料的一部分。

麻省理工公开课 - 固态化学导论课程节选

so recording from the brains of mice and rats

就是观察记录实验鼠大脑的反应。

成功的医学研究 - SpeakingMax英语口语达人

Basically, injecting it into some test subjects, making sure that they didn't get diseased from it and looking at antibody responses to see if it worked and it did.

他们把疫苗接种到测试对象体内,确定接种者不会感染疾病,同时观察抗体的应答反应,了解疫苗是否有效

耶鲁公开课 - 生物医学工程探索课程节选