Eumanlite
板钛矿
🗣️ 情景例句
They're open.
店开着。
A sow, when washed; returns to the muck.
江山易改，本性难移。
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。