Reachability tree
[计] 可达树
🧩 词语组成解析
[计] 可达性\\n[化] 可达性; 能达性
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
I have been a poor student of foreign languages.
外语就学得不好。
The old lady takes delight in visits from her grandchildren.
那个老妇人以孙辈门看她来为乐。
When the instrument is situated at more than 700 miles from the earthquake centre,
如果把这种仪器安装在距震源700多英里远的地方，