Backtracking
[计] 回溯法
🗣️ 情景例句
Is he still with IBM?
他还在IBM工作吗？
Live to learn and learn to live.
生而学之，学而生之。
Most of us have formed an unrealistic picture of life on a desert island.
我们许多人对于荒岛生活有一种不切实际的想法。