柯林斯詞典metal detector 1. N a device that gives an audible or visual signal when its search head comes close to a metallic object embedded in food, buried in the ground, etc 金屬探測器 返回 metal detector劍橋詞典a machine that you move over the ground or a surface to discover if there is metal there （用于探測地下是否埋藏有金屬的）金屬探測器 He walks around fields and beaches with his metal detector , hoping to find buried treasure . 他帶著金屬探測器在田間和海灘上四處走動，希望發(fā)現(xiàn)埋藏的寶藏。 a machine that you walk through at places such as airports , to discover if you are carrying anything dangerous or illegal （在機場等地用于探測危險或非法物品的）金屬探測器 返回 metal detector