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.,

Tabela rankingowa

Motyw

Opcje

Zmień szablon

Przywrócić automatycznie zapisane ćwiczenie: ?