Melanomycin
黑质霉素
🗣️ 情景例句
It's a piece of cake.
这是小菜一碟。
The goods were carefully packed and shipped here in excellent condition.
货物包装得很仔细，装船很小心，在这儿完好无损。
Give me a book please, Jane.
请拿本书给我，简。