board-foot log rule

例句：

1. 1. The ancient civilizations relied on board-foot log rules to navigate the vast oceans.
   古代文明依靠板足木筏规则来导航广阔的海洋。
2. 2.This rule is crucial for understanding the evolution of life on Earth.
   这一规则对于理解地球上生命演化至关重要。
3. 3. In this case, the board-foot log rule was used to determine the optimal route for the expedition.
   在这种情况下，板足木筏规则被用来确定探险队的最优路线。