Postorder traversal
[计] 后序遍历
🧩 词语组成解析
[计] 后根次序
[计] 遍历
🗣️ 情景例句
Don't be such a moaner.
别老是哼哼唧唧的。
The darkest hour is that before the dawn.
黎明前是最黑暗的时刻。
When it is eating normally, its own training begins.
当它进食正常了，训练就开始。