We decided to try another reducing agent, vitamin C.

决定试试另种——维他命 C。

We saw that just like the other reducing agent, it in combination with isoniazid sterilized the culture.

看到它跟另种相同，跟异烟肼道将这些细胞灭活。

The important thing is that developers include reducing agents: chemicals that generally donate electrons to other compounds during a chemical reaction.

重点是显影里包含，它能在化学反应中给其他化合物提供电子。

Jacobs was studying whether the TB drug isoniazid was being inactivated by the presence of a particular amino acid, cysteine, which in chemical terms acts as a reducing agent, by donating electrons.

Jacobs 之前直研究为何肺结核药物异烟肼会被氨基酸和半胱氨酸灭活，而异烟肼在化学反应中通过失电子，起到的作用。