scarce metals的用法和樣例:
例句
- Some rare metals have radioactivity.
某些稀有金屬具有放射性。
- Rare metals are extracted By our factory from scrap iron and copper oBtained By recycling the oBsolete and waste.
本廠生產的稀有金屬是收舊利廢,從廢銅爛鐵中提煉出來的。
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