single-step

例句：

1. 1. He took a single-step forward to break the ice.
   他迈了一步来打破僵局。
2. 2. The single-step method is effective in solving complex problems.
   单步法在解决复杂问题方面非常有效。
3. 3. She walked down the single-step staircase with confidence.
   她自信地走下了单步楼梯。