Substitution cipher
n.代用密码（或记号）
🧩 词语组成解析
substitution
[ˌsʌbsti'tju:ʃən]
n. 代替;代用;替换;<化>取代（作用）;
cipher
['saifə]
n. 密码;零;不重要的人;无价值的东西;
vt. 用密码书写;
🗣️ 情景例句
There's still an outside chance that he'll make it into the finals.
他打入决赛还有一线希望。
Flowers are blooming.
花朵绽放了。
but it suddenly caught sight of the drunk who was shouting rude remarks and waving a red cap.
但突然它看见了醉汉，只见他正大声说着粗鲁的话，手里挥动着一顶红帽子。