Pentethide
五乙基化物
🗣️ 情景例句
Is this OK?
这样可以吗？
What time's the next train to Washington?
下一趟去华盛顿的车几点开？
A few days later, she sent a boy to the workman to ask him if his name was Hans Bussman.
几天后，她派了一个男孩去问那人是否叫汉斯。巴斯曼。