Cyclopropene
环丙烯
🗣️ 情景例句
How about some ice?
来点冰怎么样？
Glory is the shadow of virtue.
光荣是美德的影子。
It has been found that certain bats emit squeaks and by receiving the echoes,
人们发现，某些蝙蝠能发出尖叫声，