Simple reaction
[化] 简单反应
🧩 词语组成解析
🗣️ 情景例句
This is fun. It's a piece of cake.
有意思 毫不费力。
You have a radio,don't you?
你有一台收音机，对吗？
But the historian attempting to reconstruct the distant past is always faced with a difficult task.
但是，历史学家企图重现遥远的过去可是一项艰巨的任务，