- 固有點(diǎn)
- proper: adj. 1.適當(dāng)?shù)?,相?dāng)?shù)?;正?dāng)?shù)?,?yīng)該的;正式的,正 ...
- point: n. 1.尖頭,尖端;尖頭器具;〔美國〕筆尖;接種針,雕 ...
- proper point of inflection: 固有變曲點(diǎn)
- be proper to: 為…所特有
- it is proper that: 是適當(dāng)?shù)?/li>
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