Melaena
n. [医]黑粪症
🗣️ 情景例句
I'd like to see the doctor at the earliest possible time.
我想尽快看医生。
Mountain-climbing is difficult.
登山是困难的事。
In fact they grow better if you feed them.
事实上，要是你给它们浇水施肥，它们会长得更好。