1.Answer based on your opinion on the convenience of using coins. 2.You can discuss factors such as ease of carrying, usage in transactions, and comparison with other forms of currency like digital payments or paper money.

1. 根據您對使用硬幣方便性的看法進行回答。 2. 您可以討論諸如攜帶的便利性、在交易中的使用，以及與數字支付或紙幣等其他貨幣形式的比較等因素。