变量可插入：{{restaurant_name}} {{table_name}} {{order_no}}
{{placed_at}} {{total}} {{total_amount}} {{currency}} {{note}}
商品项变量：{{qty}} {{name}} {{price}} {{line_total}} {{item_code}} {{station}}
商品项变量：{{qty}} {{name}} {{price}} {{line_total}} {{item_code}} {{station}}