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
No one knows for certain what happened, but it's a fair bet that it was not an accident.
没有人知道究竟发生了什么，但几乎可以肯定这并非意外。
Let's move on to what makes our product sell so well.
让我来说明是什么原因使我们的产品销售得那么好。
That's not surprising.
那不奇怪。