Ferrazite
钡铅磷矿
🗣️ 情景例句
She wears too much make-up.
她妆化得很浓。
The buyer has the option of cancelling the contract.
买主有权撤消合同。
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。