Underdeveloping
v. （使）发展不完全, （使）显影不足( underdevelop的现在分词 )
🗣️ 情景例句
I'm sorry you have to leave so soon.
很遗憾你不能多呆会儿。
I'm only joking.
我是开玩笑的。
'I told you yesterday and the day before yesterday,' he shouted,
“我昨天和前天都告诉过您了，”他大叫着，