这匹马一直在抗拒骑手的指令。

The horse keeps ___bucking against the rider's commands.

那匹受惊的马突然开始猛烈地尥蹶子。

The frightened horse suddenly started ___bucking violently.

那匹马突然向上跃起，差点把我甩下来。

The horse started ___bucking suddenly and almost threw me off.