Aethiops martialis
[医] 黑色氧化铁, 磁性氧化铁
🧩 词语组成解析
[医] 黑色矿物制剂
🗣️ 情景例句
How about next Saturday?
下周六如何？
It's earier to run down the hill than go up.
下山容易上山难。
the waters flow more quietly, and in the end, without any visible break,
河水流得平缓起来，最后连绵不断地