Preorder traversal
[计] 前序遍历
🧩 词语组成解析
[计] 先根次序
[计] 遍历
🗣️ 情景例句
Everything will work itself out.
每件事情都会得到解决的。
I stayed and did some extra work.
我留下加了一会儿班。
We can see the lake from our bedroom window.
从卧室的窗口可以看见那湖。