潜 - submerge, conceal, hide

infiltration; sneaking in; going undercover

to lurk; to be hidden; to be concealed; to lie dormant; to be latent

submarine

to go under; to pass under; to go through; to pass through

concealment; hiding; ambush

diving; submerging; going underwater

potentiality; dormancy; latency

nuclear submarine

latent image

skin diving; free diving

small gate

semi-submersible