Preventive substance
[医] 介体
🧩 词语组成解析
preventive
[pri'ventiv, pri:-]
n. 预防;防止;预防措施;预防药;
adj. 预防的;防止的;
🗣️ 情景例句
Well, in that case,
嗯，既然这样
Slow help is no help.
帮忙不及时，等于不帮忙。
How old are you?
你多大啦？