Sida
[医][=severe iron deficiency anemia]严重缺铁性贫血
🗣️ 情景例句
No one knows for certain what happened, but it's a fair bet that it was not an accident.
没有人知道究竟发生了什么，但几乎可以肯定这并非意外。
It's about an hour.
大概要一个小时。
That's a nice car. How long have you had it?
好漂亮的汽车。你买多久了？