Natural language understanding is a foundational task in medical dialogue systems. However. there are still two key problems to be solved: (1) Multiple meanings of a word lead to ambiguity of intent; (2) character errors make slot entity extraction difficult. To solve the above problems. https://www.roneverhart.com/Open-Box-Apple-Watch-Series-6-GPS-Cellular-40mm-Space-Gray-Aluminum-w-Black-Sport-Band/