| 钻 |
zuān xīn | to sneak in / to infiltrate / to be piercingly painful / to be unbearable (of pain, itch etc) |
| 钻 |
zuàn | variant of 钻 |
| 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 |
| 钻 |
zuàn | drill; auger / diamond |
| 心 |
xīn | heart / mind / intention / center / core / CL:颗,个 |