trapdoor (also trap)

n door in a floor, ceiling or roof （地板、 天花板或房顶上的）活板门, 地板门, 活动天窗.

transport, transport cafe, transportable, transportation, transported, transporter, transpose, transposition, transsexual, transship, transship (also tranship), transshipment, transshipment (also transhipment), transubstantiation, transverse, transversely, transvestism, transvestite, trap, trap-shooting, trapeze, trapezium, trapezoid, trappings, Trappist, trash, trashcan, trashman, trashy, trauma, traumatic, traumatically, travail, travel, travel agent, travel-sick, travel-sickness, traveler, traveling bag, travelled (US traveled),