Pentaethylated
五乙基化的
🗣️ 情景例句
What a job! Good work, Richard!
你拍得很棒， 好作品， Richard！
Paul will not continue to arbitrate their arguments.
保罗不会继续替他们的吵架做和事佬吧。
The young man did not wake up until the bed had struck the ground.
那年轻人直到床撞到地上才醒了过来。