Hemoptoe
咯血
🗣️ 情景例句
San Francisco General Hospital.
这里是旧金山总医院。
What time did you get up yesterday morning?
你昨天早上什么时间起床？
Finding planets is proving hard enough, but finding life on them will prove infinitely more difficult.
寻找行星证明相当困难，但是要在行星上发现生命会变得无比艰难。