Permselectivity
选择通透性
🗣️ 情景例句
Is this your first trip to China?
这是你第一次到中国吗？
We hope this will be a good start for profitable business relations and assure you that your offer will receive our careful consideration.
希望这将是我们互利商业往来的良好开端。我们保证将对贵方的报价予以认真的考虑。
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。