Ring formation
[化] 成环作用; 闭环作用
🧩 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;
formation
[fɔ:'meiʃən]
n. 形成;构成，结构;形成物;编队，队形;
🗣️ 情景例句
Susan called early this morning. Susan
一大早打电话来。
Altogether it will take ten days to make the trip.
完成旅行将花10天。
From an attic window we could get a sweeping view of the river where their land joined ours,
从顶楼窗口看去，我们农场与他们农场接壤处的那段河流一览无余。