helium
helium — 名詞
1. a very light colourless gas with no smell or taste that cannot catch fire or rea
氦氣
一種輕、不燃的氣體元素
a very light colourless gas with no smell or taste that cannot catch fire or react with other substances, used for filling balloons, cooling scientific equipment, and creating a safe environment for welding
Mei smiled as the helium balloon she had just released drifted up to the ceiling.
Mei 看著剛放手的氦氣球緩緩飄向天花板，露出了微笑。
collocation: helium balloon
Karim checks the liquid helium level in the MRI machine every morning before work.
Karim 每天上班前都會檢查 MRI 機器的液態氦含量。
collocation: liquid helium
Hassan and his brother filled twenty helium balloons for the school science fair.
Hassan 和弟弟為學校科學展覽會填充了二十顆氦氣球。
The research team needs liquid helium to keep their experiment at very low temperatures.
研究團隊需要液態氦來將實驗設備維持在極低溫的狀態。
A small leak in the helium tank set off the alarm in the physics laboratory.
氦氣儲氣槽的一個小裂縫觸發了物理實驗室的警報。
文法句型
helium + noun (as modifier)
uncountable: helium is / was
用法筆記
Helium is an uncountable noun in everyday use ('The balloon is filled with helium'). In scientific contexts, it can be used with 'a' when referring to a specific type or isotope ('a rare isotope of helium').