zuān​jìn

enter

钻进 (鑽進) zuān​jìn
enter verb
to get into or squeeze into a physical space

He suddenly dove into the crowd and disappeared.

immerse verb
to dig into or concentrate deeply on studies, a job, or a specific topic

Recently, he has been immersing himself in the study of philately, looking up information every day.

Frequency

Movie subtitles
1.91 per million appears in 1% of films
Written text
6.67 per million

Sources

Definitions
CC-CEDICT