例句與造句

1. It was not long after the creation of the first wheeled roller coasters in the late 18th century or the early 19th century that the first roller coaster inversion was designed.
2. The generic roller coaster "'vertical loop "', where a section of track causes the riders to complete a 360 degree turn, is the most basic of roller coaster inversions.
3. It's difficult to find roller coaster inversions in a sentence. 用roller coaster inversions造句挺難的