Rigid poly(vinyl chloride)
[化] 硬聚氯乙烯; 硬质聚氯乙烯
🧩 词语组成解析
🗣️ 情景例句
We have a real hard-nosed boss.
我们老板真的很固执。
Drowning man will catch at a straw.
溺水的人一根草也要抓。
Some of the bigger firms are engaged in researches which are of such general and fundamental nature that it is a positive advantage to them not to keep them secret.
某些大公司进行的研究属于一般和基础性的研究。因此不保密对他们才有利。