Pentaethylated
五乙基化的
🗣️ 情景例句
And now for ... something old,
现在， 接着是 一些旧的，
He who has health has hope, and he who has hope has everything.
身体健壮就有希望，有了希望就有了一切。
Come and help!
咱们去帮帮忙吧！