Its chemical stability and high melting point make it very dangerous to the body.它的化学稳定性和高熔点使得它对身体而言很危险。By mixing metals it is possible to make alloys which are tougher and have a lower melting point than the individual metals.把各种金属熔合在一起，可以制成较坚固和熔点低于单一金属的合金。