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禾洛溪将依托成熟的 28nm~110nm Flash/MTP/OTP 半导体工艺制程，结合市场需求导向，嵌入自身的设计理念，坚持自主创新与公共 IP 伙伴合作相结合，夯实优势系列 MCU 产品线，建立 …

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This is a formal way of greeting a man (e.g. someone walks into your shop , you would say “ hello sir , how can I help you?)

Hello 比 Hi正式。Dear最正式。 想象你和对方见面一定要西装革履打领带，就说Dear Mr. X, Dear Ms. X, Dear Hiring Manager（你不知对方名字只知道职位情况下） 你和对方见面穿衬衫西裤， …

2024年4月9日 · Both "hello sir" and "hi" are correct phrases, but they are used in different contexts. "Hello sir" is a formal greeting, typically used in professional or respectful situations. …

hello sir 这个在 英语 (英国) 里怎么说？. 查看翻译 Report copyright infringement

"Hello sir" is a correct and usable phrase in written English. It can be used as a greeting when addressing someone of higher rank or a polite way to catch someone's attention. For example: …