1·Iron and some nickel, both of which are metals.
铁和一些镍，它们俩都是金属。
2·Among all commodities, nickel and copper are under particular stress.
在所有大宗商品中，镍和铜尤其承压。
3·The same phenomenon seems to be happening with aluminum, lead, and nickel.
相同的现象估计也会发生在铝、铅和镍的身上。
4·"You don't need to carry 50 pounds of nickel, " one battery company man told me.
有个电池公司的人告诉我：“你根本不需要非用50磅的镍去做电池。”
5·They take an atom of lead, accelerate it, and have it collide with an atom of nickel.
他们选取一个铅原子，将其加速，让它与镍的原子碰撞。
1·The "eyeball camera" has a 3.5x optical zoom, takes sharp images, is inexpensive to make and is only the size of a nickel. (A higher zoom is possible with the technology.)
此款“眼球式相机”有3.5倍光学变焦功能，图像清晰，价格低廉，只有镍币大小（使用此技术，焦距可更高）。
2·The tickler pricked a tick on the nickname Nickel.
挠痒者在绰号“镍币”上刺了个勾号。
3·When this had gone on many times, a kind old man told him that a dime was worth twice as much as a nickel, so he should choose the dime in the future.
他这样挑选了好多次后，有个好心的老人告诉他，一角的银币要值两个五分的镍币，以后应该选一角的银币。
4·Your son just swallowed a nickel and coughed up two dimes!
你儿子刚才吞下了一枚五分镍币，可咳出两枚一角的硬币！
5·Underneath the ice spikes meet spikes as an Alaska king crab the size of a nickel crawls over a knobby sea star.
冰层之下，一个浑身长满钉子鸦样的只有镍币大小的阿拉斯加王蟹爬过一个多节的海星。