metlbond

例句：

1. 1. The strength of metals is determined by the number and type of metal bonds they form.
   金属的强度取决于它们形成的金属键的数量和类型。
2. 2.The discovery of new metals has opened up new possibilities for engineering and technology.
   新金属的发现为工程和技术开辟了新的可能性。
3. 3.Metal bonds are strong enough to withstand the forces of gravity and friction.
   金属键足够强，能够承受重力和摩擦的作用。