Bisethylxanthate
双黄原酸乙基酯
🗣️ 情景例句
When would you be available to start work here?
你什么时候可以开始来这边上班？
Time past cannot be called back again.
光阴一去不复返。
Our order specified no substitutions.
我们订单上特别裁明了“拒收替代品”。