Last weekend, I took Lucy to a park, where she discovered a track with large bumps( 凸块)and sharp tums. At first, I thought Lucy was able to ride her bike along the track, but she quickly found that her bike was too low to the ground and kept getting stuck on top of the bump
Last, I thought Lucy was able to ride her bike along the track, but she quickly found that<br>her bike was too low to the ground and kept getting stuck on top of the bump<br>