Backslidings
(backsliding 的复数) v. 倒退；滑坡；故态复萌（backslide的现在分词）
🗣️ 情景例句
What year are you?
你是哪一级的？
What''s the cause of the delay?
什么原因延误？
It is impossible to make more than the wildest guess at how many they kill, but they are hungry creatures, not content with only three meals a day.
它们一年中消灭了多少昆虫，我们简直无法猜测，它们是吃不饱的动物，不满意一日三餐。