Ilmenitite
钛铁岩; 钛铁岩
🗣️ 情景例句
but I have work to do.
但我有工作要做。
I stayed and did some extra work.
我留下加了一会儿班。
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。