这不认为是不礼貌的并盛行于陌生人之间的交流。
It's not thought impolite and in a popular topic to discuss between strangers.
陌生人之间只要一般的握手，目光交流，再面带微笑就够了。
The usual handshake with direct eye contact and a smile suffices between strangers.
陌生人之间只要一般的握手，目光交流，再面带微笑就够了。
The usual handshake with direct eye contact and a smile suffices between strangers.
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