n.

1. 【化】乙醚；醚[U]
   The merciful magic of ether was not used that day, so the poor souls had to bear their pains as best they might.

   那天，由於沒有使用能夠魔術般解除疼痛的乙醚，那些可憐的人得儘量忍受他們的痛苦。

2. 【物】以太[the S]
   It was once believed that light waves traveled through the ether.

   人們曾經相信光波在以太中穿過。

3. 【文】太空，蒼穹[the S]
   God is still as invisible to the eyes of the most developed here as the ether of space is to yours.

   就像您的眼睛看不見蒼穹的空間一樣，在我們這裡最成熟的人的眼中上帝還是無形的。

n.

1. (also diethyl ether) a pleasant-smelling, volatile, highly flammable liquid used as an anaesthetic and as a solvent.
2. Chemistry  any organic compound with an oxygen atom linking two alkyl groups.
3. (also aether) chiefly literary the clear sky; the upper regions of air beyond the clouds.
4. (also aether) Physics,  historical a substance formerly postulated to permeate all space and to transmit light.