Oxydehydrogenation
氧化脱氢
🗣️ 情景例句
For example, did you know that 1 in 4 teenagers has tried marijuana?
比如，你是否知道4个青少年中就有1位曾经吸过大麻？
The used key is always bright.
常用的钥匙总是光亮的。
The EU -- following fine continental traditions --
欧洲人遵循优良的大陆传统，