Four-colour problem
[计] 四色问题
🧩 词语组成解析
four
[fɔr]
num. 四;四个;第四;
n. 四的;四个一组之物;
colour
['kʌlɚ]
n. 颜色;肤色;彩色;（用于服装、旗帜等代表团队、学校、政党或国家的）色彩;
vt. （用颜料、彩色笔等）为…着色;粉饰;歪曲;使脸红;
vi. 变色;
🗣️ 情景例句
We'll talk about it out there.
我们到外头谈。
Nothing is so certain as the unexpected.
天有不测风云，人有旦夕祸福。
Then she introduced us to Carlos and told us they would get married next week'.
然后她把我们介绍给卡洛斯，并告诉我们说他们下星期结婚。”