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はじめまして, 初めまして, 始めまして
1. nice to meet you, I'm glad to make your acquaintance, how do you do?
很高兴认识你,很荣幸与你相识,你好!(仅在第一次见面时使用,通常是自我介绍的第一句话)
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よろしくお願いします, 宜しくお願いします, よろしくおねがいします
1. please remember me, please help me, please treat me well, I look forward to working with you
2. please do, please take care of
请记住我,请帮助我,请善待我,我期待与您共事;拜托了,请务必照顾好(所托之事)