The students walked away and saw the significance of return.

1. Students are far away, come back. This is a riddle. Explanation: Students are far away, which means that the word "zi" in the word "study" has been removed, and looking back means that "see" has been added, so the answer is "sleep".

2. Meaning: Jue: jué, jiao

(1) June:

The feeling of human or animal organs to things after being stimulated: feeling ~. I know. Touch. See you. ~ check.

Wake up: ~ wake up. ~ wake up "~ Today is not yesterday."

(2)jiao:

Sleep (from falling asleep to waking up): noon ~. I slept for a long time.