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
Fifty years? Wow!
五十年？ 喔！
The audience laughs.
观众在大笑。
George heard the noise and came downstairs quickly.
乔治听到了响声，迅速地下了楼。