helium

名詞

1. 1

   氦、氦氣

   The balloons were filled with helium so they would float.

   這些氣球裡灌了氦氣，所以會往上飄。

2. 2

   氦化學

   Helium is the second most abundant element in the universe.

   氦是宇宙中含量第二多的元素。