Allthis is made possible by the expansion card slot, which lets usersexpand the built-in memory from 128 KB to a maximum of 1.256 MB orinstall application software that adds more advanced features to thecalculator.是什么意思_Allthis is made possible by the expansion card slot, which lets usersexpand the built-in memory from 128 KB to a maximum of 1.256 MB orinstall application software that adds more advanced features to thecalculator.在线翻译_英语_读音_用法_例句