Contrastol
溴化油造影剂
🗣️ 情景例句
But next time, please ask me in advance to make a speech.
不过下一次请事先通知我一声要做演讲喔。
We can't see it very well.
我们不能看得很清楚。
of a change of atmosphere, of a diversion of effort, is essential.
改变一下气氛，转移一下注意力，这是不可缺少的。