“附加的”造句

我有一把锁,可是另外又买了一把作为附加的防盗保障.
I have one lock but I bought another as an additional insurance against thieves.

这些附加的离子叫做填隙式离子.
These additional ions are called interstitial ions.

一种附加的描述性的解释或说明性注解.
An added descriptive comment or explanatory note.