Jordan curve
约当曲线（等于simple closed curve）
🧩 词语组成解析
jordan
[['dʒɔ:dn]]
n. 约旦, 约旦河, 尿壶
curve
[kɝv]
n. 弧线，曲线;曲线状物;弯曲物;[棒]曲线板;
vt. 使弯曲;使成曲线;使成弧形;
vi. 弯曲;弯成曲线，弯成弧形;沿曲线行进;
adj. 弯曲的;曲线形的;
🗣️ 情景例句
Who's running against him?
谁与他竞选
It's hard sailing when there is no wind.
没有风难航行。
There is so much variety that you never have to make do with second best.
物品种繁多，从来不必用二等品来凑合。