F2f
[计] 面对面
🗣️ 情景例句
The boy has infected tonsils,
这孩子的扁桃腺受到感染了，
Choose an author as you choose a friend.
选书如择友。
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。