1N-COUNT 行业秘密;商业机密 A trade secret is information that is known, used, and kept secret by a particular firm, for example about a method of production or a chemical process. 行业秘密;商业机密
The nature of the polymer is currently a trade secret.
这一聚合物的性质目前是个商业机密。
2N-COUNT (尤指怎样做某事的)秘密 A trade secret is a piece of knowledge that you have, especially about how to do something, that you are not willing to tell other people. (尤指怎样做某事的)秘密
I'd rather not talk about it too much because I don't like giving trade secrets away.