Eng

Gear...

輪

Alternate, Cycle, Gear, Recur, Rotate, Stately, Take turns,, Turn, Wheel

器材

Apparatus, Device, Devices, Equipment, Gear, Instrument, Instruments, Pieces of, piece of

裝置

Device, Gear, Install, Installation, Installed, Installing, Installs, Plant, System, To install

機關

Gear, Institution, Mechanism, Organization