Pentabromination
五溴化反应
🗣️ 情景例句
I told you. He'll use any excuse to avoid math.
我说嘛 ，他就是要找各种藉口来逃避数学。
From today, let us begin to work together.
从今天开始让我们一起工作吧。
and that this happens at a rate which differs little from person to person,
衰老的速度在人与人之间相差甚微，