Quaternary compound
[医] 四元化合物
🧩 词语组成解析
a. 四个一组的, 四元的, 四价的, 季的\\n[计] 四进制的, 四元的
🗣️ 情景例句
His daughter is sick.
他女儿生病了。
We can't eat so much.
我们不能吃那么多。
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。