Ethinylation
乙炔化
🗣️ 情景例句
You must observe these simple rules.
你必须遵守这些简单的规定。
A little learning is a dangerous thing.
浅学误人。
He sent yet another fax informing the journalist that if he did not reply soon he would be fired.
于是他又发了一份传真，通知那位记者说，若再不迅速答复，将被解雇。