Ring runner
[机] 环形流道
🧩 词语组成解析
ring
[riŋ]
n. 戒指，指环;铃声，钟声;环形物;拳击场;
vt. 形成环状;环绕;使（例如铃）响;打电话给;
vi. 按铃，敲钟;回响;成环形;
🗣️ 情景例句
2,3,4 ... now switch. ... 2 3 4
……现在 左右交替……
Button holes are very hard to sew.
要缝钮扣洞非常难。
In summer it is often too hot, and in winter it is too cold.
夏天常常太热，冬天又常常太冷。