During recording, the remaining memory indicator decreases one by one. 剩余存储量指示器将逐个减少。
John had spent hours keying data into the computer,but it all went down the drain when a power cut erased the machine's memory. 约翰花了数小时才把资料输入了电子计算机，但电源一断便擦去了机器中的存储量，他的一切全白费了。
