Helium is a colorless, odorless gas.
氦是一种无色无味的气体。
The balloons filled with
helium float in the air.
充满氦气的气球在空中飘浮。
Helium is used in MRI machines to create a magnetic field.
氦被用于MRI机器中产生磁场。
The cryogenic tanks store liquid
helium at extremely low temperatures.
液氦储罐在极低温度下储存氦气。
Astronauts breathe
helium-enriched mixtures during spacewalks.
宇航员在太空行走时会呼吸含氦的混合气体。
Helium is a non-toxic and inert element, making it safe for various applications.
氦是非毒性的惰性元素，适用于多种用途。
Scientists use
helium as a coolant in superconducting magnets.
科学家用氦作为超导磁铁的冷却剂。
The discovery of
helium led to the development of modern diving equipment.
氦的发现推动了现代潜水设备的发展。
Helium is not found naturally on Earth but is extracted from natural gas deposits.
地球上自然不存在氦，但它可以从天然气矿床中提取。
In parties, people often use
helium-filled party balloons to create high-pitched voices.
在派对上，人们常常用填充氦气的气球来制造高音调的声音。
Helium is a very light gas.
氦是一种非常轻的气体。