reflect  - throw back, pedestrian - a person walking, frequency - the number of times something happens, echo  - repetition of sound, ultrasound - sound or vibrations with ultrasonic frequency, transmitter - equipment used to generate and transmit electromagnetic waves, submarine - A vessel that goes under water.,

Classifica

Stile di visualizzazione

Opzioni

Cambia modello

Ripristinare il titolo salvato automaticamente: ?