例句與造句

1. The system would include air terminals and intercepting conductors on the roof, a system of ground electrodes, and a system of down-conductors connecting the roof and ground components.
2. The system of downs was introduced to Canadian football in 1903, where the Burnside rules imposed a ten yards in three downs requirement; those criteria remain in Canadian football to the present day.
3. Both codes have adopted innovations parallel to the American game; the rugby union scoring system is almost identical to the American game, while rugby league uses a gridiron-style field and a six-tackle rule similar to the system of downs in American Football.
4. The system of downs, in terms of a set number of plays to advance the ball a certain number of yards, were originally devised by Walter Camp and introduced to the game at the college football level in 1880, when Camp was still a player of the game.
5. Camp's contributions to early football included the introduction of the scrimmage in place of the rugby union scrum, the reduction of the number of players to eleven, the forward pass, a system of downs for advancing the ball ( 3 downs to make 5 yards, later amended to 4 downs for 10 yards in 1912 ), and the introduction of the now standard offensive arrangement of players ( a seven-man offensive line and a four-man backfield consisting of a quarterback, two halfbacks, and a fullback ).
6. It's difficult to find system of downs in a sentence. 用system of downs造句挺難的