Seropositive
[医] 血清反应阳性的
🗣️ 情景例句
I'd better unpack.
我还是先把行李打开吧。
You have a younger brother, don't you?
你有个弟弟，是吗？
it takes much less energy to accelerate to that 1.5 miles per second than it does on Earth.
在月球上加速到每秒1。5英里比在地球上所用能源要少得多。