如何让石头在水上跳跃

如何让石头在水上跳跃 — Practical outdoor nature guides from the Kids lane. HowTo: Family Edition: family how-tos that actually help.

  1. 寻找合适的石头
  2. 摆好姿势
  3. 投掷技巧
  4. 根据水况调整