Sign mould
[计] 符号模型, 正负号模型
🧩 词语组成解析
mould
[məuld]
n. 铸模;模型;性格;霉;
vt. 用模子做;形成;陶冶，训练（人格）;用土覆盖;
🗣️ 情景例句
Oh, five or six years ago.
哦，五六年前。
Don't try judge young people by their appearance.
不要从外表去判断年轻人。
It's a pencil-box.
一只铅笔盒