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
but they probably had other things on their minds.
但他们也许还有其他的事想要做。
How much does it cost to go there by ship?
坐船到那里要花多少钱？
I'm afraid I can't do that right now. the manager isn't here.
恐怕我现在不能退钱给你。经理不在这里。