1.Copper kills many germs on contact. Now it is back in hospitals to do just that.
on contact 接觸
This food will deteriorate rapidly on contact with air.
這種食物一接觸到空氣即迅速變壞 。
The label sticks on contact , ie when it touches a surface.
這標簽一接觸即可貼上 。
2.Copper ions do this by interacting with oxygen and changing the oxygen molecules.
interact with 與…相互作用;與…相互影響:
These two chemicals interact with each other at a certain temperature.
這兩種化學物質在一定的溫度下相互作用 。
Atoms within the fluid interact with the minerals that form the grains.
液體中的原子與形成顆粒的礦物質相互作用 。