钻进 | zuān jìn | to get into / to dig into (studies, job etc) / to squeeze into | |
钻 | zuān | to drill / to bore / to get into / to make one's way into / to enter (a hole) / to thread one's way through / to study intensively / to dig into / to curry favor for personal gain | |
擐 | huàn | pass through / to get into (armor) |