重点词汇
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打招呼
greet; say hello; give a shout-out; acknowledge; salute; hail; nod to; wave to; tip one's hat to; make oneself known; let sb. know; send one's regards; greet sb; bid welcome; greeting; salutation; hello
Greeting song
打招呼
greet; say hello; give a shout-out; acknowledge; salute; hail; nod to; wave to; tip one's hat to; make oneself known; let sb. know; send one's regards; greet sb; bid welcome; greeting; salutation; hello