Nifs
(nif 的复数) gene[生化]固氮基因
🗣️ 情景例句
I'm not doing anything.
我没有要做什么。
These pills can be obtained by prescription only.
这些药丸只有凭医生处方才能买到。
Even more processes are never patented at all but kept as secret processes.
更多的工艺过程根本就不会取得专利权，而是作为秘方保存着。