Predevelopment
前期开发; 预研
🗣️ 情景例句
What's the nature of the problem?
是什么样的问题？
The moon is a moon whether it shines or not.
或名或暗，月亮总是月亮。
Those first words were to change my world.
我最先学会的这些单词改变了我的生活天地。