krypton

US /ˈkrɪpˌtɑn/

UK /ˈkrɪptɒn/

A1 初級
n. (u.)不可數名詞氪(化學元素)
Krypton is a rare gas in the air
n. (u.)不可數名詞氪氣
The atmosphere contained traces of krypton.

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