Optimal search tree
[计] 最佳搜索树
🧩 词语组成解析
search
[sɝtʃ]
v. 搜寻，搜索;调查;搜查;探求;
n. 搜索;调查;探求;
tree
[tri]
n. 树;木料;树状图;宗谱;
vt. 把…赶上树;使处于困境;把鞋型插入（鞋内）;
🗣️ 情景例句
And this one's from me.
这张是我送的。
Nothing gives me more pleasure than learning English.
再也没有什么比学英语更让我高兴的事了。
and we have to lower into the ground and haul out of the ground great lengths of drill pipe which are rotated by an engine at the top and are fitted with a cutting bit at the bottom.
我们必须把很长的钻杆一节节地钻入地下，然后再从地下拉出来。钻杆顶部安装的发动机带动钻杆旋转，它的底部装有钻头。