He started to swing, pumping his legs and arms as hard and fast as he could.
他看着秋千,使劲地来回荡他的胳膊和腿。
2
Far from the bullet trains' TV screens, snack boxes and perky attendants, Wang shifted on a hard seat, trying to avoid tangling his legs with the men sitting in front of him.
Those flagging on the floor find it hard to do such moves for any length of time and so often resort to exaggerated swings and flings of their arms and legs.