Ibd
离子束穿孔；炎症性肠病
🗣️ 情景例句
I don't have the heart to tell her.
我没有勇气告诉她。
To have a discussion with the committee
在委员会讨论
so it will soon be sending up four astronauts to repair it.
为此将把4名宇航员送入太空修复望远镜。