我嘅意思係 ， 想像你喺一間食肆裡面 你同人傾緊偈 食肆裏邊仲有其他人傾緊 你想將佢哋把聲都篩走 集中你目前嘅對話
I mean, imagine you're in a restaurant, you're chatting with somebody else in the restaurant, and there's somebody else talking, and you want to sift out their voices and focus on your current conversation