Positive catalyzer
[医] 正催化剂
🧩 词语组成解析
positive
['pɑzətɪv]
adj. 积极的;确实的，肯定的;[数]正的;[医]阳性的;
n. 正面;正片;[语]原级形容词;[数]正量;
posit肯定+ive形容词后缀 → 肯定的；积极的
n. 催化剂\\n[化] 催化剂
🗣️ 情景例句
for giving me a passing grade.
给我及格分数。
I ask him to do the washing now.
我要求他现在做洗涤工作。
Before it could be transported to the United States, a site had to be found for it and a pedestal had to be built.
在雕像被运往美国之前，必须为它选好一块场地，同时必须建造一个基座。