✅ 同义词
🗣️ 情景例句
Mr. Harrison, how nice to meet you again.
哈里森先生，真高兴再见到你。
Please proceed with your presentation.
请开始你的简报。
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。