木头 / 断裂 / 时 / 发出 / 啪啦 / 一声 / 吓得 / 我 / 跳 / 了 / 起来

木头断裂时发出啪啦一声，吓得我跳了起来。

When the wood snapped, it made a cracking sound, and I jumped in fright.