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 do agree.
我同意。
Never put off till tomorrow what you can do today.
今天能做的事绝不要拖到明天。
Then it turned in a semicircle, ran straight again, and turned in another semicircle to the opposite side.
然后转一个半圈，再沿直线飞，再朝反方向转个半圈。