How many wheels does a tricycle have?
The wheels of a vehicle are the circular objects that are attached underneath it and that enable it to move along the ground. 车轮
A tricycle is a bike with three wheels, two at the back and one at the front. Tricycles are ridden by young children. (幼儿骑的)三轮车
Facts about tricycles
By the end of 19th century, manufacture of several types of bicycles boosted the production of many other similar travel devices, including tricycles. The biggest expansion of their production happened in England, led by the exploits of the famous entrepreneur James Starley who personally developed several models.
By the 1884, over 120 different models were produced by 20 English manufacturers who tried to satisfy the market for the simple to use personal travel devices. While the male population preferred the bicycles such as penny-farthings and safety bicycles, female population that wore long dresses oriented more toward tricycles and carriages that were propelled both by hand or feet pedals.