Catalyst activity
[化] 催化剂活性
🧩 词语组成解析
🗣️ 情景例句
It's not easy being away from home.
离家独闯不容易。
A wise head makes a close mouth.
智者寡言。
Future historians will be in a unique position when they come to record the history of our own times.
未来的历史学家在写我们这一段历史的时候会别具一格。