Melacacidin
黑木金合欢素, 3, 3', 4, 4', 7, 8-六羟基黄烷
🗣️ 情景例句
Sure. We've been in business about five years now.
当然。我们创业至今有五年的历史。
I particularly like English literature.
我对英国文学情有独钟。
You'd better buy a new pair.
你最好买双新的。