a chemical that is added to a photographic developer in order to retard development and reduce the amount of fog on a film
a person who directs and restrains
造句
用作名詞(n.)
As in chemical reaction, the operating counseling could be a catalyzer when it is well applied, while it could be a restrainer when being misused. 若將管理輔導活動以化學反應為比喻，使用得當是催化劑，使用不當是抑制劑，雖然其并未直接參與反應，但運用之妙存乎一心，絕對可加速企業之發展。