The pronunciation of "深陷囵" is shēn xiàn líng yǔ, which is used to describe the state of confusion and helplessness of a person who encounters difficulties in learning pinyin, and is unable to comprehend or master pinyin knowledge.

This metaphor originates from gulping down jujube, which means to eat something in a hurry without chewing, resulting in the food getting stuck in the throat and difficult to swallow. Therefore, "gulping down pinyin" implies that a person is stuck in pinyin learning, unable to understand and master it, and feeling very difficult and helpless.

For example:

1. Their pinyin learning process is going well, only I am y stuck in the lumpy pinyin and feel helpless.

2.? We need a better way of teaching pinyin to help those pinyin learners who are stuck in a rut.