Melena
n. [医]黑粪症
🗣️ 情景例句
I am planning to write an editorial that I think will help you.
我计划写一篇社论， 我认为应该能帮助你们。
We can't decide what to do.
我们不能决定怎么做。
Duck your head as you go through the door there.
经过那儿的门时，请将头放低。