中文：

自动转存是指银行在定期储蓄到期后，自动将本金和利息合并作为新的本金进行续存，以方便客户不用每次到期后再到银行办理转存手续。这种存款方式通常适用于一年期及以下的短期存款，因为这些存款的期限较短，客户可能没有足够的时间和精力在存款到期后亲自到银行办理转存手续。

自动转存的优点在于可以避免客户在存款到期后忘记到银行办理转存手续，从而造成利息损失。同时，自动转存也可以帮助客户在不需要亲自到银行的情况下，自动将短期存款续存为新的短期存款，从而省去了客户到银行办理转存手续的时间和精力。

然而，自动转存也有一些缺点。如果银行的利率在自动转存期间发生了变化，那么客户的存款利率将按照转存当日的利率进行计算，这可能会导致客户的利息收入减少。此外，如果客户需要提前支取存款，那么自动转存的期限将会被重新计算，这可能会导致客户无法获得较长时间的利息收益。

英文：

Automatic conversion refers to a bank automatically combining the principal and interest to form a new principal for automatic deposit upon maturity of the deposit. This deposit method is usually applied to short-term deposits of one year or less, as these deposits have a short period, and customers may not have sufficient time and energy to go to the bank and handle the deposit conversion procedures after maturity.

The advantages of automatic conversion lie in avoiding customers forgetting to go to the bank and handle conversion procedures after the deposit matures, thus losing interest. At the same time, automatic conversion can help customers automatically convert short-term deposits into new short-term deposits without going to the bank, saving time and energy.

However, there are also some disadvantages to automatic conversion. If the bank's interest rate changes during the automatic conversion period, the customer's deposit interest rate will be calculated based on the interest rate on the day of conversion, which may result in a decrease in the customer's interest income. In addition, if the customer needs to withdraw the deposit early, the automatic conversion period will be recalculated, which may result in the customer not being able to obtain interest for a long period of time.