Postorder
[计] 后根次序
🗣️ 情景例句
Well, when do you think you can come over to work?
你想什么时候开始工作呢？
A valiant man's look is more than a coward's sword.
勇士的神色胜过懦夫的刀剑。
If they knew how difficult it was to drill through the hard rock, they would lose heart.
如果他们知道了钻透那坚硬的岩石有多么困难，他们会丧失信心的。