potassium
potassium — 名詞
1. a metal element with a soft, silver-white appearance that is usually found joine
鉀
銀白柔軟的活潑金屬元素
a metal element with a soft, silver-white appearance that is usually found joined to other elements and helps make things such as fertilizer, soap, and glass.
Pure potassium stays under oil so it does not react too quickly.
純鉀要放在油裡保存，才不會太快起反應。
pure potassium under oil
Potassium burned brightly when the teacher dropped a tiny piece into water.
老師把一小塊鉀放進水裡時，它立刻明亮地燃燒起來。
potassium reacts with water
In spring, farmers add potassium to soil before planting tomatoes.
春天時，農夫會先把鉀加進土裡，再種番茄。
The factory needs potassium compounds for soap and glass production.
那家工廠在製作肥皂和玻璃時需要鉀化合物。
Mina pointed to potassium on the chart in chemistry class.
Mina 在化學課的圖表上指著鉀給朋友看。
- K
the chemical symbol, used in formulas, charts, and labels rather than ordinary explanation
- potash
often refers to potassium compounds, especially in farming or industry, so it is less exact than the element name
- potassium metal
a narrower term for the pure reactive form
文法句型
potassium reacts with water
potassium compounds
add potassium to soil
pure potassium under oil
用法筆記
Usually uncountable. In many contexts, speakers mean potassium as part of compounds or materials rather than a piece of the pure metal.