求翻译：3．WM是通 过底部突出部分使平面发声的，所以应尽量保持WM底部和硬质平面的紧密接触。同时请使用者不要试图将WM放在火炉、燃气灶、加 热后的餐具等高温物体上。是什么意思？

3. WM is through the prominence of voice from the plane at the bottom, so you should try to keep the WM and rigid plane close contact at the bottom. At the same time, users do not try to place the WM in furnace, gas stove, tableware and other high temperature of the heated object.